You will have to experiment to find what works for you. I bought a 45 degree foam wedge and hated it. I use it now as a backboard. I place two pillows vertically against the wedge backboard and sleep sitting up, 90 degrees. Now if I wake up at 3 or 4, I usually move the pillows to a horizontal position and sleep propped up. If I combine this with diet .. low acid, whole food diet ... and eating about 4-5 hours before bedtime, I am usually okay. For side sleepers sleeping on your left side, due to stomach position, has a better chance of fighting off reflux than the right side. Some people start sleeping in a recliner and when they awake a few hours later, as many of us, they move to bed. If I don't follow the rules I place an antacid or alginate tablet in the back of my mouth and that calms things down for me. I used to get a sore throat every night (I probably also have silent reflux that affects the throat, not the esophagus) I would pop in a throat lozenge and that would last for hours. If you want to try to strengthen your LES, the UK has a product called Iqoro. You can look it up and see what it is and the exercises you can do with it. You can't buy the Iqoro in the US. If want to try the exercises, buy a cheap mouthguard with a strap to do them. Takes about six months to see a difference. Good luck, I hope you find your solution quickly, but don't get frustrated if you have to do trial and error. I probably should buy a bolster, a padded pillow with arms, for sleeping sitting up. Maybe I will try that next ....