There are so many possible reasons for this trouble you're having, I'm not sure that any of my experiences would help you.

Have you talked with your doctor about this? If so, have they tried a prescription medicine (or OTC) to help?

I take a med to help me fall & stay asleep, due to my PTSD. That does help a lot, especially because I was having daily nightmares about the same situation over and over again. Your description doesn't quite sound like what I was experiencing...but only a doctor (or CNP) can make that educated decision.

Best wishes to you!