Hi there
I had a spur taken out of my spinal cord at c6 then a cage and the usual bolts and nuts over c567. I feel like a bowling ball is on a match stick. Worst thing I did was do the exercises the physio gave me with a stretchy thing to pull against I was never the same.
I am from Australia but if you look up Super Sleeper Pro they have pillows that you can add or take out the filling as desired. Surprisingly I found myself topping up with more as I am a side sleeper. But your neck and shoulder falls to where it needs to be in the memory filling that is very light and not stiff at all. It is all in little bits on the inside. I found Aldi had one similar that I bought to add some more filling. See how you go but I spent hundreds of dollars on pillows prior to finding this amazing one. Good luck and all I can say is Osteo Therapy has changed my life. Still not fixed but by geez the side stretches the do are amazing and at least I am now sane