Just a sidenote: GERD can lead to Barrett's Esophagus (precancerous changes in tissue), and erosive damage to the esophagus can accumulate over time and abruptly become life threatening. After decades of terrible GERD, my father nearly died from exactly such an undetected gastric bleed, losing 11/12 of his blood (which doctors replaced as it coursed out) before an emergency-medicine team finally found and sealed the rupture.
He almost certainly suffered minor brain damage during this episode, and later, after about a decade of taking anti-protonic medications for reflux, developed exactly the abnormally rapidly growing abdominal cancer that patients who take anti-protonics apparently develop at a higher rate than similar GERD patients who don't.
I don't mean to give medical advice. I can only describe what happened in my family (which has a heritable deformation in the esophagus, leading to severe GERD). Take it with a grain of salt (and an antacid) as what it is: an anecdote from some anonymous nonexpert on the internet.
Anyhow, good luck. I'm glad to know you're working actively on the problem, not ignoring it as my father did, and I hope you find some long-term relief and peace.