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How much milk does my baby need?

This is a classic question I get from almost all parents at some point during working together. Many people ask this because they think when baby is cluster feeding or eating more than every 2-3 hours or ”snack nursing”, that this means they are not getting enough and therefore are still hungry.

On average, a newborn drinks about 1.5–3 ounces (45–90 milliliters) every 2–3 hours. This amount increases as your baby grows and is able to take more at each feeding. At about 2 months, your baby may drink about 4–5 ounces (120–150 milliliters) every 3–4 hours.

Keep in mind that a baby tummy is tiny and breastmilk digests more quickly than formula so keep that in mind depending on your infant feeding choice. Infants need to eat about 8-14x or more per 24 hour period and this includes night feeding.

Different babies take in different amounts of milk; a typical range of milk intakes is 19-30 oz per day (570-900 mL per day). This increases in small increments during growth spurt times and is usually at it's peak with intake 1-6 months while gradually decreasing after 6 months as more solids and other complementary foods are introduced with milk. has a great calculator for this and also a wonderful in depth article.

VeryWell also has a cool little calculator for parents to use and even as a lactation consultant I refer to these resources often for each individual baby's needs.

Your baby's weight in pounds x 2.5 / 8 = Ounces of breast milk per bottle

If you are using milliliters rather than ounces per bottle, multiply the result by 30.

Signs that you know your baby is doing well with feeding is by checking their output, if something is going in then something is coming out. Don’t troubleshoot it yourself if nothing is coming out, that indicates a problem. Over the counter constipation relief when used improperly can cause your baby more harm than good. Always ask your pediatrician before using any products and seek the help of an IBCLC to find out why baby may be having trouble with input to output. If they are peeing (7+) and pooping (1+) daily or more then likely doing well.

Another way to know is by weight gain! The pediatrician appt can feel so far away. If you need a quick weight check or weighted feed transfer you may want to visit a breastfeeding support group like mine or find an IBCLC to book an appt to get an update on your baby’s growth and development with regards to infant feeding.

If your baby is on the person with the milk, they may always shows “hunger cues” because they can smell the milk on you, so they root—open their mouth and start licking. The best way to tell is to simply put the baby in a safe place or with someone else and see how their cues are then, if still rooting then yes, possibly still hungry, offer a breast or a bottle.

Expect your baby to lose weight in the first 3 days of life, but never more than 10%. They should gain about 1oz per day after that. Back to birth weight by 14 days. If none of this is happening or you believe your baby is not getting enough, please seek out a lactation professional to help you and your baby meet your goals.

I love this easy to read infographic for quit computing and simple results! Found at a website I approve of your perusing during your journey.

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