Question: how much breastmilk does a one week old need?
Answer: On average, babies weigh 6 - 9 pounds at birth and will need between 14 to 22 ounces of milk per day. 7 days old baby: The stomach is the size of an apricot and can hold 1.5 to 2 ounces of milk. At one week old, your baby has started to gain back the lost weight, and needs 14 to 22 ounces of milk per day.