Mommies How much does your newborns eat? My little girl is only 4 weeks old and I pumped out 3oz with no problem could do more but stopped there. I'm guessing that's how much she eats sence she gets a full tummy off one breast with Lactation specialist said that's great cause average newborn takes both breast at one feeding . I'm so happy I'm making more then enough for her I hope my milk supply keeps up😊