when my 3 yo stays at my in-laws, he comes home and wants me to feed him. i know its because my mom in law feeds him, and he just eats it up (haha). i say something to her jokingly, but wont take it further than that because i know she loves it and she is such a Godsend to me i cant make an issue of it. anyway, i just dont indulge him. he isnt gonna starve himself. its hard, because he eats so little in the first place, but youre not helping anyone by giving in to him. plus, when you hassle him, you are making a thing out of it, which is how food/eating issues start. its sooooo hard to sit by and let them not eat, believe me, i know, but making an issue can really cause him problems later on. you are turning food into a bargaining/control thing, not good, especially for a 3 year old who is just starting to need to assert their independence in any way they can, and is looking for ways to control his world. i would just give him the food, especially his favorites, eat meals together, and when a reasonable time is up, thats it. try not to say anything. limit snacks, be sure he is drinking enough, but not too much stuff that fills him up, my son fills up on milk and then wont eat. i would stick to water for a little while. he wont starve himself. and if it does go too long, a couple of days, i guess? then talk to your doc. good luck, D.