I wouldn't say I have completely healed, but it has gotten A LOT better. It has taken months to get to the point of it being comfortable. It went fro bad to really bad over a course of 5-6 months. Over that span, I made small changes in my diet. I did all the things doctors recommended; removed acidic foods, no coffee, no soda, etc. I was growing impatient, and very stressed out over my condition. Things continued to get worse, no matter what I tried.
I then did everything I could to reduce stress, and my faith and prayer was the biggest thing to help me cope. I do believe God played a role in guiding me towards healing for me, since the doctors didn't do anything at all.
I think what helps us heal will be different for everyone, but the number one thing everyone with GERD needs to do is reduce and eliminate as much stress as possible.
I then started reading about inflamatory foods, and as it turned out, most of these inflamatory foods are also removed from most GERD reducing diets (FODMAPS, PALEO, SIBO diets, etc). The number one is Gluten. I removed Gluten, dairy, removed sugars (except for honey), eliminated sodas, eliminated alcohol, especially beer, limited myself to 1 serving of fruit per day. I began to eat very lean protein (chicken, fish, eggs, etc.), veggies, . It took a fairly long time for my diet to really begin to show a difference. I began to eat a clove of garlic each day, and this seemed to really improve my condition much faster than anything else. If you can't eat raw garlic, I recommend baking a bunch in tin foil, and keeping it in the fridge each week. Don't measure success in days, but instead weeks.
I still believe I had some sort of imbalance in my gut flora (bacteria in the digestive tract). I still struggle to get that balance optimal, but it seems to be slowly getting better.
Good luck.