When Should I Stop Feeding My Baby Formula?

Updated 30 June 2026

Most pediatricians recommend beginning the transition from formula to whole cow’s milk at one year of age, when the digestive system is mature enough.

Weaning is an individual process that works best when you slowly mix cow’s milk with formula over several weeks to allow your baby’s palate and gut to adjust.

By age one, solid foods should provide the majority of your child’s nutrients, with milk acting as a supplementary source of calcium, healthy fats, and vitamin D.

The transition from an organic baby formula to cow’s milk typically begins right around your child’s first birthday. Up until that point, growing babies strictly need the specific vitamins and nutrients packed into formula or breast milk. 

By around 9 to 12 months, babies may have already settled into a mostly solid food diet that agrees with their digestive system. So, if your baby is already eating a diverse, nutritionally balanced solid diet, it’s perfectly fine to completely wean them off formula by age one. At this stage, cow’s milk steps in as a supplementary source of calcium and fats rather than the main event.

Note, however, that weaning is a highly individual process that depends heavily on your baby’s taste for table food rather than a strict calendar date.

In this article, we’ll discuss how understanding the biological needs of a toddler versus an infant will help you navigate this transition with confidence.

Why Cow’s Milk Before 12 Months Is Not Recommended

Before the age of 12 months, pediatric and public health guidance generally advises against using cow milk as a primary drink for several critical reasons:

• Kidney Strain: In the first year of life, an infant’s kidneys are still developing and are not yet equipped to process the higher concentrations of protein and minerals found in cow’s milk. Introducing it too early places unnecessary strain on this system.
• Nutritional Gaps: Cow’s milk doesn’t provide the adequate iron, vitamin C, or healthy fat balance that infants need during this stage. Relying on it as a primary drink before 12 months increases the risk of iron deficiency anemia.
• Formula Design: Unlike cow’s milk, infant formula is regulated to serve as a nutritionally complete primary drink for babies under one year. This reflects what a developing infant’s body actually requires.
• Culinary Exceptions: Once your pediatrician has given the go-ahead for solid foods, small amounts of dairy used in cooking are generally fine. However, cow’s milk as a bottle or cup drink should wait until after the first birthday.

How to Determine if Your Baby Is Ready

Twelve months is the standard recommendation, but individual readiness varies. Some parents may choose to continue giving baby formula until 18 months, particularly if their child is a picky eater or has not yet established consistent solid food intake. 

Before you make the final switch, it is helpful to assess your child’s relationship with solid foods. By the age of one, your toddler should be consuming roughly 1000 calories per day from a variety of sources. 

For instance, you can give fruits, vegetables, grains, and proteins. If formula is still providing the majority of your child’s daily calories, speak with your pediatrician before beginning the transition. They can assess whether your baby is getting adequate iron and dietary fiber from solid meals: two nutrients that become especially important once formula is reduced.

What to Switch to When You Stop Baby Formula

As formula becomes a smaller part of your toddler’s day, their nutritional needs should be increasingly met through a combination of whole milk and solid foods. Here’s what a balanced post-formula diet generally looks like:

Important Dietary Notes

• Balanced solid foods: By twelve months, solids should become the primary source of calories. For example, a typical day might include small portions of eggs or beans, soft cooked vegetables, fruit, and grains spread across three meals and a couple of snacks.
• Whole cow milk: Whole milk is the standard recommendation for toddlers aged one to two because its fat content supports healthy brain development and growth. Most pediatricians suggest 16 to 24 ounces per day, an adequate amount to provide meaningful nutrition without crowding out solid food intake. Start with small amounts and watch how your child responds over the first few days.
• Clean water intake: Water should become the secondary main drink alongside milk. Providing plain water in a cup helps keep your child hydrated without the unnecessary sugars found in fruit juices.
• Organic milk options: For families who chose formula with clean-label or organic certifications, continuing that standard into the milk stage is a natural preference. Look for certified organic, pasteurized whole milk and where possible, options from pasture-raised sources.

Note on Milk Sensitivities: If your child encountered tummy issues with cow’s milk formula in the past, continuing with a gentle option like LittleOak formula or other similar goat milk baby formulas can be a great way to ease the transition. However, if the sensitivity persists, it’s best to consult your pediatrician to find the right formula or to rule out any underlying allergies.

How to Transition From Formula to Milk Without Drama

The transition from formula to milk goes most smoothly when it is gradual rather than abrupt. Slowly shifting the ratio over several weeks allows your child’s palate and digestive system to adjust at a comfortable pace, and reduces the likelihood of feeding resistance along the way.

Step 1: Introduce a Cup for Practice 

From around 6 months, or once your baby shows developmental readiness like an ability to sit steadily with support, begin offering small sips of water or formula in an open cup or straw cup between feeds. This is earlier than many parents expect, but starting cup practice well before the formula transition makes the eventual switch much smoother.

Introducing the cup early, well before the formula transition begins, gives your baby time to develop the motor coordination needed to drink from it confidently. By the time you’re ready to reduce the formula, the cup will already feel familiar rather than foreign.

Step 2: Begin with a Small Taste Test 

Once your child reaches their first birthday and your pediatrician confirms they are ready, begin by replacing one daytime bottle with a mixture of approximately 75% formula and 25% whole milk. Warming the milk slightly to match the temperature of their usual formula can help with initial acceptance, as familiar warmth can ease the adjustment to a new flavor.

Step 3: Balance the Ratio Gradually 

Every few days, increase the proportion of milk and decrease the formula in that feed until you reach a consistent 50/50 split. Watching your child’s digestive response during this middle phase is important to ensure they are processing the new proteins comfortably without increased gas or changes in stool frequency. 

If your child shows reluctance or any digestive changes, hold the current ratio for a full week before increasing the proportion of cow’s milk. There’s no need to rush. A slower transition is entirely appropriate and, for many children, preferable.

Step 4: Tackle the Comfort Feeds Last 

The bedtime feed often carries the strongest comfort association for both parent and child, and it’s reasonable to transition this one last. Keeping a small formula bottle at bedtime for a little longer while daytime feeds shift to milk is a practical and emotionally sensitive approach.

Over time, you can transition this final bottle to a cup of milk or simply a small amount of water to protect their developing teeth.

Step 5: Prioritize Solid Food Meals 

Shift the focus to three meals and one or two snacks containing a mix of different food groups to ensure proper calorie intake throughout the day. Serve milk with meals and water in between instead of relying on constant bottles, helping your toddler understand that food is now their primary source of energy. 

Introducing a wide variety of whole foods across different food groups during this stage, which can also be facilitated by moving toward an organic baby food bundle, helps lay the foundation for a diverse and balanced diet as your child grows.

What About Bottles and When to Stop Them

It is often recommended to move away from bottles completely between twelve and eighteen months. Introducing cups as early as six to nine months gives your baby plenty of time to master the skill before making the full switch, which protects developing teeth and prevents milk from crowding out daily solid food calories.

While bottles provide important comfort during infancy, continuing to rely on them past the first year can create a few challenges worth being aware of:

• Tooth decay risks: Frequent bottle use beyond the first year increases the risk of early childhood caries (tooth decay). This milestone is an excellent time to start introducing early gum or tooth care habits, as primary teeth are vulnerable to decay from prolonged contact with milk or formula.
• Calorie overconsumption: Toddlers who drink large amounts from a bottle may feel full before mealtimes, which can reduce their interest in the varied solid foods their growing bodies need.
• Developmental hurdles: Transitioning away from the bottle at the appropriate time supports the development of broader eating skills, including acceptance of different food textures and self-feeding.

You do not have to wean from formula and bottles on the exact same day, but it certainly helps to have cups integrated into the daily routine before you fully retire formula from your child's schedule.

Supporting Your Child’s Growth With Formuland

Every stage of your child’s development brings new nutritional needs, and navigating those changes thoughtfully makes a real difference.

At Formuland, we carry a carefully selected range of organic products to support your child through each stage of development, from formula through toddlerhood. Our selection is held to strict quality and safety standards, and we’re here to help you find what fits your family’s needs.

Beyond formula, our range includes high-absorbent diapers and non-toxic baby bath products chosen with the same attention to ingredients and safety standards.

Shop our curated selection of premium, organic baby formula and baby care essentials to support your baby’s next milestone.

FAQ - Weaning Your Baby Off Formula

Why do pediatricians recommend stopping formula at 12 months?

Before 12 months, an infant’s kidneys are not yet mature enough to handle the higher concentrations of protein and minerals in cow’s milk. Formula, by contrast, is specifically formulated to meet an infant’s nutritional needs at each stage of the first year providing the right balance of iron, healthy fats, and vitamins that cow’s milk cannot replicate as a primary drink. By the first birthday, both kidney function and digestive maturity have developed enough to make the transition safely.

Can I wait longer than 12 months to stop feeding my baby formula?

There is some flexibility. While it’s harmful to feed your baby cow’s milk before 12 months, it’s not that your baby absolutely must stop feeding on formula as soon as they’re a year old. Some parents feed their baby formula until 18 months and begin weaning then.

How can I be sure my baby is eating well enough to wean?

By 12 months, your child should be consuming approximately 1,000 calories per day from a variety of food groups, including fruits and vegetables, grains, proteins, and dairy. 

If solid food intake feels inconsistent or your child is still relying heavily on formula for daily calories, your pediatrician can assess whether they’re getting adequate iron and key nutrients before you begin reducing formula.

When I stop feeding my baby formula, what kind of milk should I replace it with?

When you do start feeding your baby cow’s milk, make it whole milk (or two percent milk), and not skim or one percent milk. Your brand new toddler needs a fattier milk to ensure their normal growth and brain development, especially if they’re a pickier eater.

What’s the best way to make the switch from formula to milk?

Regardless of when you begin, the transition works best when it’s gradual. Start by adding a small amount of whole milk to your child's usual formula, then slowly increase the proportion of milk over the following weeks until the bottle or cup contains milk only. This approach gives your child’s digestive system and taste preferences time to adjust without disruption.

Should I be weaning my baby off the bottle at the same time that I stop feeding my baby formula?

Yes, and in fact, it’s recommended to begin introducing a cup before the formula transition starts. From around 6 months, or once your baby can sit steadily, you can offer sips of water or formula in an open cup or straw cup between feeds.