Tank it off ? Or this may sound super weird. But any time I am in pain or really sick and can't sleep I cover up with a blanket and take the corner of it and just cover my eyes with it like with it going from left to right even if all the light are out and I fall asleep really fast I could drink a ton of energy drinks and still fall asleep like that, my fiance even does it now. For some reason it works it may just be a mental thing if not. Take a pillow case and fill it with rice so its about an inch thick sew it together POP it in the microwave and you just made yourself a heating pad !
You probably have scoliosis if your wearing a back brace, my cousin had scoliosis and had to wear one. She always had to wear it, even when see slept. Sorry, must be very uncomfortable :( Just try a different position.