My son who is 5 only weighs 35 lbs. He is very small and when we go places everyone thinks that he is the youngest when in fatc he is the oldest!! But we did have some issues with eating. They have been awful I remember when Riley’s put in A NG tube for him it was the most awfulest think that I have ever had to go through!! He did not gain any weight from that either. They wanted to put in a feeding tube but they told me they could not tell me if that would work or not. But I never went with that. But he does drink lots and lots of chocolate milk. and he does not like to eat meat. I think  that is because his teeth rotted from him prednisone  and we had to have all 4 front teeth pulled. But all in all he is doing ok but i do wish he would eat more. has anyone ever tried those pediasures? My youngest has Fragile X syndrome and he was on those due to low muscle tone and all that stuff in his mouth but my son who is 5 and swcah he would drink those and tell me they were good just a thought. well i wish everyone well with the eating issues!!