I went through radiation and chemo about 18 months ago. I too live alone. Am 72 and have my dog living with me. I drove myself to every appointment, to the grocery store and to other appointments. My goal was to eat 6 small meals a day and not lose too much weight. When someone offers to bring you food, accept it even if you can’t eat it. My freezer was full of soup. Load up on gelatin, ice cream and applesauce or anything that you can swallow easily. Attitude goes a long way with this. I had two operations. First was to remove tonsils and do six biopsies in my throat. Second was TORS and lymph node dissection. 18 removed with two cancerous. Ask for the magic mouthwash and stay ahead of the pain. It won’t be your best year but you will get through it.