My LO wants to eat EVERY hour!!!! He nurses for about 15-20 min and seems to be satisfied but a hour later he is screaming to eat! He won't take a pacifier at all, I'm begining to wonder if my milk is filling him up. He's gaining weight really good, I don't want to over feed him, but nothing calms him down but nursing. I don't want to use formula but I may have too... Any suggestions?