How do you (or your partners) manage to sleep through the night?

My partner was diagnosed with ME/CFS about a year ago. At the moment, she’s in a severe state and has been bedbound for the past month. She’s usually active in this subreddit, but right now she doesn’t have the energy for any screen time at all. She asked me to reach out on her behalf for advice on improving sleep.

She has tried over-the-counter sleep aids like DPH, antihistamines in general, melatonin, and CBD oil, but none of them have really helped. Her Garmin watch also shows that her sleep is often marked more as stress than rest due to waking up and having an accelerated heartrate.

Obviously, it’s a cycle: no amount of aggressive rest leads to any improvement when not getting enough sleep at night.

What have you (or your partners) found helpful for improving sleep quality?