Charlie,
There is hope. I am 6 years out of treatment now, but at your stage I was still on a feeding tube and lived on soup and milkshakes for what seemed like a couple of years after that. Then slowly, but surely, things started improving. Now I can eat and enjoy anything from a steak to Mexican food to pizza to chocolate desserts and cookies and even nuts or popcorn. Of course I have to drink water to get them down, but hey, my water bottle is a part of my hand at this point. It goes everywhere that I go. The thick mucous goes away, and in time most of your taste will probably return. The only things that I cannot eat are very spicy foods...they burn the hell out of me and things like sticky candy bars are not worth the effort.
So keep hope alive...you are still a short-timer. Even with no salivation, life is good.

Take care,
Danny G.