Hi JCK and welcome;
I agree with Diane's advice above. My Ro also suggested the Baking Soda and salt (1 tbsp. each) to a gallon of water after the mucous got so thick and the sores wouldn't allow me to use "Miles Mixture". The thing was, at that point I couldn't handle anything in my mouth. Once I was post treatment about 2 weeks, even though I was barely swallowing, I started using this mix and now I keep it handy all of the time. When everything else "burnt" my mouth or didn't help at all this seemed to help keep the thicker stuff rinsed out. I also elevate my head and use a humidifier at night. Some say it doesn't help them but it seems to help me a little.

As far as the swallowing goes, keep exercising, stretching, and working your throat and jaw muscles. My Dr.'s, and several on this site as well were constantly stating this. Also, he should work on positioning things (even sips of water) to find the best route to guide things down his throat. I think this in itself helped me tremendously with getting back to starting to eat again. Several folks have shared the positive benefits of a speech therapist to aid in swallowing, drinking, and eating which I am going to speak with my ENT about next week.

Keep experimenting and Pushing. When it comes to this subject every little success is a big victory.

Steve