MY PARTNERS SLEEP HABITS

I've been seeing this guy for 6 months and he just moved in.  And yes I'm all for cuddling at night, I also like my space too. In the middle of the night when I try to slip away he pulls me right back next to him and in his sleep when I do get away and I'm asleep on my stomach he literally lays his back half on my back like on top of me. Is this normal, I mean I've been single for about 6 years, not sure if something has changed lol.. and yes I try to push him off and I do tell him and for a minuet he'll move over but as soon as he's asleep it's back to it.. Is there anything I can do to try and get my peaceful sleep back ?