From 5 days to 3 months, a full-term, healthy baby will need about 150 ml of prepared formula per kilogram of body weight, every day. For example, a baby who weighs 3 kg will need 450 ml of prepared infant formula each day. From 3 to 6 months, this falls to 120 ml of infant formula per kilogram of body weight each day.

By the end of the first month: Your baby will be up to at least 3 to 4 ounces (120 mL) per feeding, with a fairly predictable schedule of feedings about every 3 to 4 hours. By 6 months: Your baby will consume 6 to 8 ounces (180–240 mL) at each of 4 or 5 feedings in 24 hours.