My son just had his tonsils and adnoids removed on June 7th. He didn't complain about the pain too much, but he did lose alot of weight. Due to him not eating much. What I stated to give him was Pediasure. I don't know if you've heard of it. It's a nutritional drink for kids. You can find it in the baby section. That helped my son feel better. His doctor told me that it was normal for a child to not eat for about 4 to 5 days. If you have any other questions feel free to email me.