Feeding

My son is 2 weeks old, formula fed, eats well and I am currently feeding him every 3 hours 80ml , went to doctor and he’s gaining weight and healthy, sometimes at night he doesn’t wake up but I still feed him every three hours, I read that by 3 weeks I can increase to 90ml or more depending If he wants more , and doesnt have to be woken up at night for a feeding unless he wakes up and wants it is this correct? Or should I still do it every three hours until he is about a month old?

I’m afraid to over feed him but he loves his food lol! Or I’m afraid I’m

Not giving him enough currently 80ml every three hours will increase to 90ml or more next week at 3 weeks old, I appreciate any advice !

Thank you so much