Yes I’ve dealt with this many times before .. I built up a fear of sleep at one point because of it. A couple things that helped me is sleep hypnosis videos, cold ice pack on your chest (calms your vague nerve), face mask, weighted blanket & lavender essential oils..

I’m really loving the muscle relaxation technique because it’s super quick in response to a wave of anxiety. You tense up a specific muscle and be mindful of the feeling and then release the tension! If it’s a huuuge wave then I’ll tense up so tight until I actually start shaking (which is a trauma release exercise in itself).

Sometimes when I struggle to sleep due to restlessness, anxiety, ect.. I'll play a podcast on my phone (low volume of course) or listen to some ASMR/rain drop sounds while I close my eyes & allow myself to relax. More easily due to the comfort those things happen to bring me.