Thank you so much for the advise!  I did call another place and they
told me to try wet food. He is drinking a lot of water and his cat
milk, so he's ok in that department.  He did eat some but not as much
as I had hoped and so far he has kept it down.  He's also sleeping a
lot! I do have a nephew that just got a puppy that has kennel cough;
do you think a cat could get that?  Don't think so, but you never
know.  Thank you again for the advise, and yes we will be taking him
in.