I spent a couple YEARS learning how to sleep in a safe posture. My best sleeping position is in a recliner. After learning how to sleep on my back and stay on my back, I got good symptoms free sleep on my back. After years of being disciplined, my neck is stable enough that I can sleep on my side if I have set my pillow properly.

I still get my best sleep in a recliner with my head and neck in perfect alignment.

My PT of a decade ago spent many treatments doing gentle traction and mobilization and muscle work.

A PT in Guelph, Ontario has an entire protocol for this. Myoworx.com

When somebody starts throwing around medical terms, my mind spins. I have limited visualization functions.

An image showing the anatomy would help.