Recovery for Sick Cats?

[Oselkhandro Resident]

I am wondering how to help my cats recover if they are 100% hungry and in that sick "coma". I know they do not die, and that a rescue potion can restore them. However, I thought that they could be fed for 7 days and could also recover in this way. My problem is that my 100% hungry, sick cats do not seem willing to eat when they are in a coma. Is there something else that I need to do? I saw something called "food recovery" potion, but I do not understand its purpose. Is this necessary if I just want to feed them back into health? Thanks for any insight!