4 Pcs Orthopedic Bed Wedge Pillow Set – Post Surgery, Relaxing, Back & Adjustable Head Support Cushion – Triangle Memory Foam Pillow for Acid Reflux, Sleeping, Reading, Leg Elevation, Snoring (GREY)

Also, I used this when I had to sleep sitting up. I had to sleep on the couch with an ottoman in front of me so there was no where to roll over and sleep. If I tried in the bed I'd just scootch right off it in the middle of the night! Or you could even get a LazyBoy type chair! https://www.amazon.com/dp/B08SKXJ953?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_14