Inclined Bed for Spasmodic Dysphonia (Acid Reflux)

I was advised by my doctor (who suggested acid reflux as the cause of spasmodic dysphonia) to sleep in an inclined bed. So I had a custom-made inclined bed made with the following specifications:

Width - 36 inches
Length - 75 inches
Height - 4 inches (lowered), and 12 inches (extended)
Leg - 14 inches but slanted backwards and locks when extended so it's not higher than 12 inches

I had been sleeping on this bed on and off for the past 4 months and I have not seen a miraculous voice return. But I still use it just in case any acid reflux is aggravating my SD, the slant/inclined position of the bed will keep the acid from getting to my vocal cords while sleeping.