I remember exactly where he is at. At 3 weeks left of radiation I crashed. Phlegm made sleeping longer that 15 minutes impossible and fatigue was consuming. Luckily I had a PEG and my husband "fed" me and pushed my meds through the PEG. I also did not have pain. Just get through it. It is almost over, about two weeks after it is over it turned around for me. I left on a trip 20 days after treatment ended and felt better each day. I am now 8 months after treatment and I feel great.