Barbara,

It should get better over time. Since he's just over a month past the end of radiation, it's still recent enough to cause problems like that for many people (and I assume he's drinking lots of water, which may be triggering the nighttime bathroom visits).

A couple of things have helped me combat dry mouth during the night. One is keeping my head somewhat elevated (I use two fairly substantial pillows). Also, I try to sleep mostly on my side -- if I sleep on my back, my mouth still tends to go dry rather quickly.

Cathy