hmmm... I'm just not used to keeping track of their weight so much!!! I've had four kids and everyone is so worried about how much their baby is eating and gaining. Should I be that concerned too??? LOL! Maybe I'm being negligent, but as long as he is wiggling, pooping, and demanding his food... even if he only eats for a few minutes... I'm not worried... and he's on the small end.... roughly the 5th percentile. Neither myself nor my doc are concerned.