Pollyperkins I get sleep paralysis, too, and it's awful. I'm usually having a dream but am also aware of my surroundings at the same time. Sometimes I can move my feet a bit and can alert dh who will then wake me up properly. Sometimes I think I'm screaming my head off but dh says I'm just making tiny little squeaking noises.
Like you, if I don't come to properly, I can then go back into it again. It's very distressing and I've no idea how they can be prevented.
Harry and Meghan ‘royal’ tour of Nigeria.