When we were syringe-feeding Pyka, we were told to work up to 1 can and 1/4 per day. These are the cans that are a bit flatter and bigger than the Fancy Feast cans.

If Mr Meow is around 10 lbs normal weight, use that as a guideline. Or give your vet a quick call and ask how much he should be getting.

I am wondering about Feliway...anything that might help his mood...

Some subQ fluids might perk his appetite, if he is feeling a bit dehydrated.