When they can start radiation is a question for your doctor. I wish you well. Radiation is not easy but you will get through it. My husband is 4 weeks post radiation and his recovery is going well. Neck has healed on the outside and is eating better and better each day so the inside is also healing. His taste is starting to return. Use all the tools they suggest. Magic mouthwash, salt rinse, vaporizer and regular schedule of extra strength Tylenol. Boost powder was his favourite to supplement his caloric intake when food was too uncomfortable. Kraft dinner as well. Count calories and proteins to make sure you are getting what you need. Do the exercises the speech language path will give you. It’s all important. We kept a weekly planner sheet on the counter to check off all things daily. It was a valuable tool to keep him on track. I wish you well. Let us know how you are doing. The doctors and nurses are highly skilled and their goal is to see you well.