Baby is getting “greedy”?

He used to drink only 2 1/2 oz after he was born, he’s a little over two weeks and drinks 3 1/2 oz. sometimes 4oz and wants more. Do I give him more or just try and get him to sleep? (I give him a soother and rock him to sleep) is that bad? Should I be giving him what he wants or.. I’m a FTM.