I elevate the top of my bed with risers and that has helped tremendously with acid reflux (I’ve been diagnosed with GERD caused by a hiatal hernia). Bed risers can be bought at any store selling beds and bedding, like Bed Bath & Beyond, etc. I think I recently saw bed risers in a Dollar Tree too! They come in sets of four, but you only need to use two for the under the casters or legs of the head of your bed. It will need some getting used to because you will keep sliding down the bed, but it really helps with the reflux!