try nasal dilators. they can be a little uncomfortable to start and some brands like to fall out mid sleep (or I subconsciously take it out and drop it in the bed), but I can attest that I sleep much deeper when I use one, or atleast the increase in quality and quantity of dreams make me think I do. also I wake up in the morning in the same position I fell asleep in and not feeling tired more often, where I usually am sleep flopping all over the place according to my other half