Quoting Shinewithjoy:" My daughter was 5 weeks early and 6 pounds at birth. She was 30 inches and 22 pounds at 15 months. Make sure your little guy is getting enough fat & calories to keep him growing!! :-)"
Well he just started gaining more weight at a faster pace the last couple months. He was having a hard time learning how to chew things and eating in general. Now that he's got that down he's a little garbage can lol. He's still nursing though so I think once I get him on whole milk that may help too