Yes, that may be the answer. He's getting help through early intervention and on the waitlist to get tested for autism so see if that's what's causing his picky eating. Luckily his pediatrician is not urgently concerned about his diet because he's growing well enough and seems healthy, but since I've stopped breastfeeding I've been keeping track of what foods he's been eating and noticed how few vitamins are in all the things he'll eat.