For the mucus I took Robitussin to thin it out and eventually it does go away as you heal from the radiation, it can take a few weeks. I seem to remember just waking up one day and realizing I didn't wake up to cough the stuff up one night. It just kind of quits all of a sudden but it does take some time. Instead of tissues or paper towels I coughed the stuff up into soft washcloths and just washed those.

As far as swallowing, I always had more trouble with the pudding consistency stuff because I had to use my tongue too much to move it around and it stuck to every part of my mouth. I did much better with slightly more solid food. Baked fish is also really easy to eat.