Trouble Sleeping Due to Claustrophobic Imagery

I have this too pretty strongly, haven’t found many people who can relate (hypnagogic “hallucinations” but while awake). It was really bad earlier this year, seems to come with stress, dissociation, and visual snow. Usually just complex shapes, fractals, landscapes, faces—but maybe darker stuff 10% of the time. Lying on my bed alone definitely made it worse, plus taking 200mg lamotrigine in one dose made me loopy. I have synesthesia so not sure how it’s related, but sometimes I NEEDED music to feel ok. What I’d say is use any willpower you can find and do *something* other than like, just lie there and float away without sleeping. Grounding exercises and fidget toys helped me a tiny bit until I could relax Its much weaker now for me for some reason (only sometimes, or “afterimages” from what I’ve been doing) but it truly was incredible yet exhausting, sorta scary too.