I experienced that sort of thing when I had 1st dealt with insomnia, if there's any topic you'd be open to in these times find something that can play audibly, in the dark as you try to at least keep relaxed.

hope you found some sleep

I think about stuff I screwed up, what I should have done differently and also what I should do now but it's like thousand wasps buzzing so it feels like there's no way out.