Alright so Rocky was taking 75 ml the beginning of the week and I started making 3 ounces of formula…

Alright so Rocky was taking 75 ml the beginning of the week and I started making 3 ounces of formula and was going to let him drink until he's full because I thought he wouldn't finish it because he wasn't drinking that much. Well he finishes all of it and then wants more afterwards. I don't know what to do. I don't want to feed him more because I'm afraid he'll overeat but I also don't want him to get fussy if he's actually still hungry. He acts like he's still hungry and keeps rooting..