I know what sleep disorder is. It can be awful. Last year I lay on the floor or changed sides in bed, and I felt I was going crazy...
Could you ask your med for another pack of sleeping pills ? It can be addictive but thanks to the person who invented zolpidem and diazepam. These pills help me a lot, but the problem with benzos is that you must increase the dosage. For the moment, I force myself to keep on 5mg daily (which is low).
One tip if you don't have enough sleep pills : mix them with melatonin pills. These nights, I take 1 melatonin pill + 1/2 or 1/4 zolpidem. My psychiatrist said It should not be mixed, but I don't care because I want to have enough pills in stock. In France, pharmacies just gives you one pack of 14 pills for 1 month. But here is what I do to get more packs : I ask pills to BOTH meds (regular doctor and psychiatrist).
Another tip : I have my last drink 2 hours before going to bed, so I must wake up less to go to the toilet. Avoid sleeping teas which doesn't make sense because of this reason. And last thing : everybody says it's not good to watch screens before going to bed. To my experience, it's actually wrong. The trap is to go to bed too early. I can say I sleep better while watching TV until midnight rather than going to bed too early without screens, because mental rumination is FAR WORSE than blue lights from screens. And it's important to wake up and go to bed at the same hour. Sorry for my bad english, I don't always use translators.