I delved into cervical pillows and found one on amazon that i really love. It’s made with firm memory foam, so it sinks in a bit, and the front part presses up against my neck. It feels amazing. Shredded latex felt like a brick to me, and shredded memory foam was overly conforming. I did make a pillow out of the shredded memory foam pillow by tearing up a bunch of tiny pieces of latex, mixing it up with the memory foam at a ratio of 1/3 latex and refilling it. The pillow feels perfect now.
Learned a lot from your post, thank you for sharing.