I won't suggest any formula.
Breastmilk padin.
Do your research how to increase breastmilk. How to start. What to do to have more milk.
Examine your nipple, if inverted or not.
Pumping. Essentials in pumping and feeding baby.
Things like that.
Don't push your baby take formula, if you can produce so much.
Research also, size of baby tummy after giving birth.
Christina Galanza