My son who has just turned 3 2 days ago is an EXTREMELY picky eater. He eats a handful of things, chicken nuggets, peanut & nutella sandwich & a few cereals, but even then, some days he doesn't even want those. He does have a like for snacks it's weird, he will try any snack but gets angry, upset, when I try to get him to try some food. I have tried to cut down on his snacks but since he doesn't eat anything it scares me so much that he will get sick so I cave in and get...