How To Transition From Breast Milk To Formula

Making the switch from breast milk to formula is a big transition for any parent. This article covers everything you need to know to make the process smooth and stress-free for both you and your little one.

Whether you're going back to work, experiencing breastfeeding challenges, or just making a choice for your family, we're here to help guide you through how to transition from breast milk to formula while keeping your baby happy and healthy.

Why Is Breastfeeding Recommended for The First 6 Months?

The American Academy of Pediatrics recommends exclusively breastfeeding for around the first 6 months of a baby's life. Breast milk provides the ideal nutrition and contains antibodies that boost your baby's immune system and gut health.

Studies show some breastfed babies have:

  • Lower risk of asthma, allergies, and obesity
  • Reduced chance of respiratory and ear infections
  • Lower likelihood of diabetes and leukemia
  • Stronger emotional bonding through skin-to-skin contact

Formula Provides Complete Nutrition

If breastfeeding is not possible or you have decided to incorporate or fully transition to formula, rest assured that infant formula is nutritionally complete for babies.

Formula is designed to provide all the proteins, carbohydrates, fats, vitamins, and minerals that infants need for growth and development in their first year. Key nutrients in formula include:

  • Protein for muscle growth
  • Carbohydrates for energy
  • Essential fatty acids like DHA for brain and vision development
  • Vitamins A, C, D, E, K, and B vitamins
  • Minerals like calcium, phosphorus, and iron

The U.S. Food and Drug Administration sets strict standards for nutritional content in commercially available infant formulas. Formulas are generally based on cow's milk or soy and are modified to mimic the nutrient profile of breast milk as closely as possible.

While breast milk may have immunological benefits that formula lacks, you can feel good knowing formula has all the nutrients your baby needs to thrive. Talk to your pediatrician if you have any concerns about nutrition and formula recommendations tailored to your baby.

When Is Baby Ready for Formula?

Every baby is different, but here are some common signs your little one may be ready to start supplementing with formula:

  • Good head and neck control - can sit upright with support
  • Interest in watching you eat or reaching for food
  • Ability to move tongue sideways - needed for solid foods
  • Doubling birth weight and weighing around 13 pounds

Consult your pediatrician, as they can best assess if your baby has met developmental milestones indicating formula readiness.

How To Prepare for the Transition

With guidance from your pediatrician, begin preparing 2-4 weeks before making the switch from breast milk to formula.

Gradually Introduce a Bottle 

Start offering a bottle with pumped breast milk so your baby gets used to it. This helps prevent bottle refusal.

Choose a Formula

With so many formulas out there, which one is right for your baby? The best bet is always to speak with your pediatrician. They might recommend goat milk formula if your baby has a sensitive stomach, soy-based formula if you’re staying away from animal products, or traditional cow milk formula. The right formula is different for every family.

Formula Supplies

Stock up on bottles, nipples, sterilizer, and other essentials. Carefully read the instructions on how to store and heat your specific formula.

How to Smoothly Switch to Formula

Switching to formula over the course of a few weeks helps your baby gradually adapt to the new feeding method. Here’s what to do.

  • Start by offering formula at the end of a breastfeeding session
  • Slowly increase formula bottles while reducing breastfeeding frequency
  • Use paced bottle feeding to mimic breast and prevent overeating

Sample Transition Schedule

Week 1: 1 formula bottle per day 

Week 2: 2 formula bottles per day 

Week 3: 3 bottles of formula, 2 breastfeeding sessions 

Week 4: 4 bottles of formula, 1 breastfeeding session

Troubleshooting Common Problems

If issues arise, try the following solutions:

  • Gas or spit up - Change nipple flow, burp frequently
  • Refusing bottle - Offer different bottle types, try different formulas
  • Allergy - Switch formulas and consult your pediatrician
  • Dehydration - Check for enough wet diapers and call your doctor

Introducing Solid Foods

Around 6 months, you can start introducing solid purees and cereals while continuing formula and/or breast milk. Check with your pediatrician on when and how to get started.

Keeping the Bond Strong

To retain that emotional bond during bottle feeds, maintain skin-to-skin contact, eye contact, talking, and singing to your little one. 

Formula Feeding Myths vs Facts

Now that you have the facts, you can help debunk these common formula myths!

Myth: Formula-fed babies sleep better. 

Fact: No evidence shows formula aids sleep. Feed on demand.


Myth: Formula causes colic. 

Fact: Colic causes are uncertain and not specific to formula.


Myth: Formula has no benefits over breast milk. 

Fact: Formula enables complete nutrition if breastfeeding is difficult.

When to Call the Pediatrician

Contact your doctor if you notice any of the following:

  • Dehydration signs - lack of wet diapers, lethargy
  • Excessive crying or discomfort
  • Rash, vomiting, diarrhea or other allergy symptoms
  • No bowel movements for multiple days

Choosing the Right Formula

Aussie Bubs offers a range of formulas to suit your baby's needs, including infant formula, toddler formula, goat milk formula, and traditional cows milk formula. When choosing the right formula for your baby, consider factors like your baby's age, any allergies or intolerances, and your baby's nutritional needs. Read the formula labels carefully. As always, consult your pediatrician. And good luck!