sleep paralysis 🙈 need advice

 I need advice! 

My partner has sleep paralysis and last night it became really strange 😞 too the point where he was gripping on my wrists and wouldn't let go also wrapped his arms around me and I couldn't breathe or move... so anyway he was having a nightmare so I tried too wake him but he's didn't respond but then a few mins later he opened in eyes bare in mine he was still asleep then he started smiling at me not nice smile a really creepy like joker/a clown smile and making a laughing noise but very deep and creepy and every time I spoke he'd laugh 😞 I tried waking him and that's when he grabbed me very tight I was scared... I managed too grab the water next too me and pour it on him and it's shocked him and he woke up 🤔 but before bed he told me he can go too sleep because something in his mind is telling him he's not going too wake up ones he's asleep....

Point is...is there anyway he can stop this happening or anything you can get too help... it's really starting too freak me out any advice would help ❤️❤️