All the support meds are helping, George is eating like a champ and basically being pretty normal - moreso than he has been in a few days, at least. It's all palliative, but really, at this point, so what? He's a happy kitty and hopefully can be kept that way as long as he has left.
Thanks for the comments last note.
Also posted to ソ-ラ-バ-ド-のおん; comments at Dreamwidth. Please comment there.