Eating to much?

My baby is 7 weeks old. He normally drinks 4oz every 3 hours. Sometimes has a 5 hour stretch at night. Well the last 3 days he has been wanting more. He drank 7oz atleast one time each day. And now today he drank 7oz and 4hrs later another 7 oz. I feel like it's way to much ?? He also had surgery at 4 weeks old for pyloric stenosis and was hospitalized for 4 days during that time it must've been a week of not eating or keeping anything down. So I wonder if hes trying to catch up? We had 4 appointments last week for him and they said everything seemed normal. BUT that was before he started eating so much so now I'm debating on calling pediatrician just to make sure this is okay.?