I didn't say anything about it, because I was afraid I'd jinx it. But he's okay now. In fact, he's eating again and drinking normally. In fact, he's eating a lot. And the supposed vitimines that he'll eat like candy, he hates, but we can deal with that too.
Remy has always been a delicate cat who I've feared won't live to a ripe old age, but he's about 8 now, I really was hoping I'd have him longer than that. And it looks like I will.