I hear you kullboys – I used to wake up like clockwork at 2 to 3 am and not be able to get back to sleep. I did try to not stress too much by reading (great for getting through a reading list) but it can make you feel like crap the next day.
I used some of the practical tips provided by Dr James below to optimise my potential for sleep (dark, quiet room, no caffeine after midday, exercise, no screens before bed etc.). I know it doesn’t help at the moment but it does get better along with many other health/body/mind related issues once you have finished treatment and the virus has gone.