Donna, my heart goes out to you!! Do you know what I think I would do at this point? I would go on the internet - aside from the obvious cat sites - perhaps Google and do some searches for this problem in cats.

I am not recommending any remedies other than what the vet
has prescribed - but maybe they have a "home remedy" that might relieve his congestion that you haven't thought of...........

I have this idea because I just had a major computer problem and I had a professional here to help me. He couldn't find out what the problem was - he went on to Google and did a search and sure enough - other people had the same problem I did and it was a missing Windows file. He downloaded the file and VOILA it worked.

I use this as an example because there are many things you can learn from other people aside from Vets and us.......and it will occupy your mind while you read and search.

I am so sorry......you must be so very upset about poor Casey.

A big hug from Gini and Rascal..............