Tiny toddler

Hi! So I have a 3.5 year old boy who has always struggled to gain weight. At around 6-7 months old he didn’t want his bottle anymore and it was a miracle when we could get him to take one. He has always been a picky eater but as of lately he eats so much and he struggles to gain weight for some reason. He’s only 25.4 lbs while his 2.5 year old brother is 29lbs.

He follows his growth curve for the most part at the doctors but part of me wonders if something else is keeping him from gaining weight. Anyone else gone through this?

I should add I’m 5’6 his dad is 5’2 so a lot of people say he just takes after his dad which I get for height but not for weight.