How many OZ in formula at 7 weeks?

Sherina
My baby is 7 weeks. He does little whining here and there and everyone tells me he's hungry even after a feeding. So he's drinking 4oz and after feeding  1 or 2 oz here and there due to whining. I tried giving him 6oz to be full. Then half hour later he's whining and mother in law is telling me he's still hungry. I don't wanna over feed my baby. What's going on. People telling me what to do is driving me crazy!