Funny story though, my sister (she was like 5 at the time) thought i had gotten something else taken out. She asked my mom when i was just waking up "Mommy, why did Willy have to get his testicles taken out?"
Only advice i can give you is don't try to eat anything. Its easier just to give up and wait.
I got mine out when i was 10, i got my annanoids out at the same time i was in and out the next day....grow some balls? lol jk i ate 5 hours after the op.... turkey dinosaurs and mash.
The only thing that sucked was a trainee nurse did my injection, 9 times and failed, i cried then they gased me mmmmmm banana flavor gas.
Bro get some Panadeine forte and have heaps of cold foods like ice cream, yogurt and my fav cream caramel, sucking on ice helps a lot also, be strong big fella you will be chowing down on that steak sooner than you think.