I hope he gets a chance with the specialist. Any idea why he's so congested? A sweet orange tabby (emaciated too) I had here a few weeks ago (Cheddar was rescued by Leslieflenner) had a high temp. and was wheezing so I popped half a Zithromax tablet down his throat. The next morning his temp was way down and the wheezing and heaving in his chest was gone! You may want to give that a try...I would. HUGS!!