Are edibles something you have access to? In Houston we got high quality gummies, nerds ropes, rice crispies, and brownies that I know of. All plus more (vape pens, honestly dont know if those affect the lungs or not) have been floating around all have cali stickers on them my dude says they come cali. Of course none of that stuff is legal here, not sure if thc is legal where you're at. I'm sure they're around if got the right dude.
AlsoQuetiapine if I'm not mistaken is an anti psychotic and bi polar medication... im bi polar and it seems like I took that at one point in my treatment. Dont know if that's the best thing to sleep with, probably has buku side effects.
The best thing for sleep I've taken was not even a sleeping pill it will make you sleep 8 hours straight no issues. Only side effect I've had from it is super bizarre nightmares sometimes which I enjoy. Oh it will make you eat like a horse when you first start it. I've been taking it 12+ years. It's not a narcotic, it is controlled but most dr.s will have no issue prescribing it. Its name brand name is remeron, and generic is mirtazipine 30 to 45 mg pills work the best but it wouldn't hurt to start at 15mg. For someone bi polar like me it's been great for me because when I have a manic episode instead of staying up 5 or 6 days while it passes, I'm able to just go right to sleep. It also helps with anxiety.
https://www.nhs.uk/medicines/mirtazapine/