3 days old 2 oz?

LEE

My plan is to pump for my son, but I'm still waiting for my milk to come in so we are supplementing with formula at the moment. My question is weather 2 oz at 3 days old seems right? At the hospital he was drinking 20-25 ml but he woke up this morning and has been feeding about every hour and hasn't been napping well so we decided to give him more. It just seems like a pretty big jump from 25 ml to 2 oz and my first born definitely wasn't eating this much at this old. He is a big baby and was 9 lbs when he was born so idk if that would effect how much he eats?