Question: is 40 ml enough for a newborn?
Answer: By just weight alone, a 6.6-pound baby has an average size stomach of 20 mL on day 1 and would require 40 mL or 1.3 oz of breast milk or formula every 2 hours to meet their basic metabolic needs or 60 mL every 3 hours. But babies should also be fed by infant cue to satisfaction.