how much to feed infants by age
The research tells us that exclusively breastfed babies take in an average of 25 oz (750 mL) per day between the ages of 1 month and 6 months. 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). We can use this information to estimate the average amount of milk baby will need at a feeding: 1  Estimate the number of times that baby nurses per day (24 hours).
Several studies have measured breastmilk intake for babies between 12 and 24 months and found typical amounts to be 14-19 oz per day (400-550 mL per day). Studies looking at breastmilk intake between 24 and 36 months have found typical amounts to be 10-12 oz per day (300-360 mL per day).
Because of the great variability in the amount of solids that babies take during the second six months, the amount of milk will vary, too. One study found average breastmilk intake to be 30 oz per day (875 ml/day; 93% of total intake) at 7 months and 19 oz (550 ml/day; 50% of total energy intake) at 11-16 months.