Advice on how to make sure my partner doesn’t choke in sleep after he had drinking binge

At work Christmas party I guess he drank 8 drinks of who knows what earlier today, and when he got home he chugged an entire bottle of wine 750ml 11.5%. In like 15 minutes. Stayed up for a bit after.

He’s sleeping now, but just worried since he had so many drinks tonight and don’t want him to choke . I don’t think I’m gonna be able to sleep beside. Any advice on how to make sure he’s safe? I have work in the morning and wanna sleep but just anxious he’s gonna choke