Hey Missbec!

So this is what I found on a website.

(1 week)= 1-2 ounces
(1 week to 1 month)= 2-4 ounces
(1 month to 3 month)= 4-6 ounces

or they say to give your baby 2.5 ounces per pound of formula each day. So if your baby weighs 6 pounds than in a 24 hour period they should drink 15 ounces.

Also it really does depend on your baby. As long as she is eating I would not be worried