I just learned I needed to keep my head and neck is a stable straight position. I've learned to get comfortable so I can stay in the same position all night. I usually sleep flat on my back with no head lift. I bunch my pillow up around my ears so my head does not tip to the side. It took years before my neck was stable enough to sleep on my side. I would sleep with a pillow under my knees in the beginning while I learned to stay asleep on my back.

For me, If my head tipped forward or to the side, especially to the left, after 19 or 15 minutes, neck inflammation would cause Central Sleep Apnea and I would stop breathing. This would cause a cycle of on and off breathing and disrupt my sleep such that I would have stressful dreams, almost nightmares.

It took a lot of work to get my sleep quality up.