I don't know Aly .... wish I did ... but I do know he is lucky to have you!!! It made me teary eyed picturing him cuddling that bunny too! But I know he loves being held up close to your face and having you talk softly to him. My kittens all love that too!!! It is so amazing how even as tiny as they are, they look me in the eyes and hang on my every word! Such precious blessings!
It sounds like this little guy is a fighter, and I feel he will pull through just fine! Hang in there... you're doing great by him!