I've only had one night with it, but I had no neck pain today for the first time in a while. Here's the link if you wanna check it out https://www.amazon.ca/gp/product/B08FJ9737F/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
It's a Canadian link so you might need to change that
This is a .ca link, FYI
https://www.amazon.ca/gp/product/B08FJ9737F/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
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I'm unsure if this can help your case but I can't sleep on my back and I use this pillow to sleep on my side. I wake up feeling okay, albeit some days a bit of jaw soreness in the morning. It has very square sides that can support my jaw. I sleep with my mouth open.