Does anyone have tips on how to improve sleep after surgery?

I had a T10-pelvic fusion almost a year ago. Prior to that, I bought an adjustable bed and was doing fairly well sleeping until about four months ago. Now I am waking with significant pain in my lumbar area that usually lasts for 1-11/2 hours. I have tried adjusting my head, my feet, putting a pillow underneath my knees and currently use a mattress topper. I am not a side sleeper because it increases hip and neck pain. I have spoken to my physical therapist and doctors with no improvements after trying their suggestions. I recognize it is very individualized, but I was wondering if anybody has tips or things you found worked to improve sleep. I don’t want to sleep in a recliner for the rest of my life. In advance, thank you for sharing your sleeping successes.