Welcome, Joann, if this can be moved to "introduce yourself" section, you will get more responses, and help. I had the same cancer, tonsil, which is in the oropharynx. I assume the doctors expect continued difficulty to eat, thus weight loss, that may effect his successfully completing treatment, and ultimate outcome. The worst is around the last two weeks of treatment, through several weeks after. It gets more difficult around the 3rd week. I don't want to take over this thread, but look forward to another posting.