My Best Friend Is On The Final Two Days Of

My best friend is on the final two days of radiation for his stage 3 anal cancer. He never complains, but today said he did not think he would make it. The doc prescribed silver something cream. It helped and they repositioned his penis during the last days because of the discomfort. In addition, his rectal area is uncomfortable and he is finding it hard to walk because of the oral xeloda. He is so close and I wonder if this will get better in the coming weeks while we have to visit the next steps, probably abdominal perineal resection?