the vet gave me monoject to feed him medicine, because that's the only way i can feed snoopy and know how much I'm giving him. for the pass week I've been holding him a little more tight than usual inorder to feed him the med and to clean his wound. I know he doesn't like it, but there is no other choice but to apply a little force to him. Make sure you are in a room when doing so, because Snoopy always escape. I tried to do it in the living room, I spend a long time to catch him back to finish his medicine. Snoopy didn't have e-collar when after the surgery, therefore he has no problem accessing water and food. Yesterday I started to feed him medicine without picking him up, and it seems working. I reached in the cage, first pet him for a little bit, then put one hand on the top of his head and the other hand put the monoject to his mouth and he was taking the medicine and i like this way better, because i only have to pick him up to clean his wound.
I believe Sumu should be eating and drinking by now, if not go back to the Vet immediately. Also make sure she is peeing and pooing. Since you bunny is a she, it may take 1-2 days for her to completely back in normal. I also try to feed with my hand at the beginning just to make sure Snoopy was eating.
MAKE SURE you give her treat after the whole process, she will be happier. Snoopy runs away from me immediately (still in the gated room) and wouldn't let me get close to him. But as soon as I give him his favorite treats, few minutes later, he'd come sniffer my feet again.
I have Snoopy locked up for the past week, because I don't want him to be running around too much and affect his healing process, I still play with him in the cage, pet him and feed him a little treat from my hand, so he would still bond with me.