Hope all goes well for you with radiation, eat well now, get your self buffed up nutritionally with lots of protein and smoothies. You might want to try getting Magic Bullet(I don't work for them) a small food processer which makes great easy nutritious drinks.
My husband had 2 every day, I usually used vanilla yogurt, milk, ice cream, whey protein powder, bananas, blueberries, strawberries. etc. Towards the end of treatment the blueberries seemed to bother his throat. After week three, he still needed the feeding tube inserted but continued with his shakes. What do they recommend for skin care during your treatments? Good luck, will be thinking of you