How many oz of formula/breastmilk a three-month-old baby supposed to be feed

[QMommy]

Hi all mommies,

I have a 3-month-old DD who only drinks within 12-18 oz of milk/day. My question is how much she supposed to eat at this age? Less than 20 oz/day is too little for her? What can I do to help her to eat more than that amount without forcing her. I can't force her to eat anyway. She only eat when she wants to, otherwise she spit out if I force her.

Thanks for your input

[tiredbuthappy]

what is she on? breast milk or formula? babies on breast milk only actually need less than babies on formula because the breast milk is digested so efficiently there is little waste.
the guidelines for breast milk are 20-30 ounces/day. there is great variation due to both the baby and the mommy (the caloric content of milk may vary from woman to woman). i am sure someone else can give you info about formula.

is she gaining well? is her ped happy with her progress? if she is gaining well then don't worry too much. does she normally drink so little? my dd went through some phases where she took very little for a couple days. this was usually followed by a growth spurt during which she took much more than normal.

[QMommy]

Thanks for your input tiredbuthappy,

I'm breastfeeding her since birth. I only give her fomula on the days i don't have enough milk for her. She's born at 8 lbs, she's at 12 lbs at 2 month check-up. She eating much less since she is 2 month-old. She ate very good for the first few weeks (20+ oz). Suddenly, she hardly finishes 20 oz/day. I'm so worry that she not gaining any lbs at 4 month check-up