How much should my baby be eating?

The AAP rule of thumb is about 2.5 fl oz of prepared formula per pound of body weight over 24 hours. A 10 lb baby lands around 25 oz a day; a 13 lb baby around 32 oz. Most babies do not go above about 32 oz a day, no matter how much they weigh — past that point the answer is solids, not more formula.

Roughly 25 fl oz (about 750 mL) a day from about one month until solids begin, with a normal range of 19 to 30 oz. Unlike formula, this does not scale with weight: as the baby grows, breast milk becomes more energy-dense, so the volume stays fairly flat.

Divide the daily total by the number of feeds. A 13 lb three-month-old on about 32 oz a day over 7 bottles works out to roughly 4.5 oz per bottle. Newborns take much smaller, more frequent feeds — often 1.5 to 3 oz, 8 to 12 times a day.

0.5 to 2 fl oz per breast per session is typical in the early weeks, and output per session is not a measure of supply. What matters is the daily total: a full supply is about 25 to 30 oz a day across 8 to 12 removals. Dropping sessions lowers supply within a few days.

After the first week, at least 6 wet diapers a day is the benchmark. Newborns typically go through 8 to 12 diapers a day, dropping to around 6 by six months. Consistently fewer than 6 wet diapers is a reason to call your pediatrician the same week.

Around 6 months, and readiness is about the baby rather than the calendar: sitting with support, steady head control, loss of the tongue-thrust reflex, and interest in what you are eating. Before 6 months, breast milk or formula covers everything the baby needs.

Not much at first. Between 6 and 9 months solids are practice, not calories — milk still supplies roughly 85% of intake. By 9 to 12 months solids take over more, and milk drops to around 70% of the earlier volume. This hub applies that taper automatically once you enter an age above 6 months.

No. Diluting formula is dangerous: it can cause water intoxication and low blood sodium, which leads to seizures in infants. Always mix to the ratio printed on the tin. If cost is the problem, ask your pediatrician about assistance programs rather than stretching the can.

About 4 hours at room temperature, 4 days in the back of a refrigerator, and up to 6 to 12 months in a deep freezer, per CDC storage guidance. Thawed milk should be used within 24 hours and never refrozen.

Not on its own. Intake varies day to day and appetite dips during growth pauses and illness. The signals that matter are weight gain, wet diapers and alertness. If two of those look off, or the baby is not back to birth weight by two weeks, call your pediatrician.

Because the two are calculated in completely different ways. Formula volume scales with body weight; breast-milk intake is age-based and roughly constant. Using the weight rule on a breastfed baby overstates the volume badly in the second half of the first year.