My son went in for his 6 month check up to find he had only gained 4 oz since his 4 month check up. He went from the 21st percentile to below the 3rd. His length increased slightly (45th percentile) and his head circumference is the 40th percentile. I am exclusively breast feeding and have not attempted solids as I've read that breastmilk is the best nutritionally when there is a weight gain problem. I am going crazy worrying about him. My Doctor made us come in for a weight check two weeks later and he had only gained 2 oz (I had visited a lactation consultant, have been waking him up to eat during the night, and feeding him every hour during the day). My doctor is now wanting me to supplement with formula to get his weight up. He acts normal, is meeting milestones and has tons of wet diapers everyday. His urine is clear and he stools every few days. Why has my milk production been fine and made him grow and now he's stalled? I can't figure it out. I stay at home with him and have added some pumping sessions throughout the day. I'm now trying More Milk Plus to see if that helps. I really don't want to give him formula. What should I do?