Olly was the same, about food, he got used to it, but it was bowls cleaning out, everything, even touching him in his cage, has bunny had her operation? It might calm her down, but it can take a while after to calm down, just be gentle, never clean or empty her cage when she is in it, it is a big thing to a bunny cleaning them out, Olly climbs in his cage as soon as it is empty for some reason and I just say. “Come on out, nearly done.” its his home, so he is wondering what is going on, then when he goes back in he pushes everything to where he wants them, making a racket, its like if someone cleans your room and they put your clean clothes on your desk, you don’t want them there it goes somewhere where you want it, just stay calm when cleaning her cage, open the door let her come out on her own, I was told to open his cage and sit on my bed and wait for him to come out, he did but before I used to get the top off the cage and take his things out and put him under the top of the cage with his things with newspaper underneath, but now I put all his toys where he is playing, as for the underweight bunny stuff I don’t know, maybe someone else can help.