Need lots of help, 14 months old, will not eat. Can get a few bites into him by distracting him with whatever. He is off any of the growth charts, weighing only 17 pounds. If he is really in a mood not to eat, will self induce vomit, by sticking his fingers in his mouth. Some days can get him to drink partial bottle of formula. Has anyone else ever heard of this? Any tips?