How much formula?

Nana10
My baby is a week and 3 days old and I just wanted to know about how much formula she should be drinking?(I'm not producing enough to breastfeed her) I usually give her about an ounce to an ounce and a half of formula but she always seems like she can eat more so the most I've given her is 2 ounces my mother in law says to give her more Bcuz she still seems hungry but I feel like that's too much Bcuz she is so little.