Hi Billy

Im also receiving immunotherapy and have insomnia. I dont think the two are linked but they could be. More likely that cancer is always there in the background of your thoughts.

Ive tried the following that have helped a bit. No TV phone laptop an hour before bed. No caffeine after 3pm tea coffee cola etc. Cut out alcohol esp late evening, while it may help you to get to sleep quickly you will waken in a few hours. Get as much excercise as you can. Relaxation techniques can help I dont do these. The room you sleep in needs to be quiet, cool and totally dark. I put a blackout blind behind the curtain to achieve this. Mobile phone set to do not disurb overnight placed face down. The blinking light on the fire alarm covered over. Regular bedtime and getting up time. Your GP can give you a mild sleeping pill but restricted to a few weeks use. Hope this helps even if you only get an extra hours sleep it is something.

Ed