I have sleep paralysis anytime from once a year to a3 or 4 times. Scary as shit when I was a kid. A couple of times as an adult I felt like I wasn't alone.
However since being with my wife for te last ten years.ni have been able to change my breathing pattern enough for her to wake up and then in turn wake me up. I'm much more calm about it now to, because I understand it. However not being able to move can be really uncomfortable, castrophobic like. The neat part though is being fully aware of everything in the room even though your eyes are closed.
Anyhow, my buddy was having the same thing happen in his place. Had a mutual friend who has certain "powers" to come over and said a women was in the apartment. He found out somebody had passed away in the apartment. He just started talking to the women from time to time and this helped. Although things get moved or scattered still from time to time. He says there seems to be a mutual agreement. That's all second hand. So take it for what you want.