As a fellow gastritis sufferer, I feel your pain. Before my surgery, when I had gastritis I immediately had esophagitis as well, and it took months to get comfortable again. I still get gastritis (generally as a result of taking antibiotics) and it takes a long time to heal. It's still much better than pre-surgery, because the inflammation stays in the stomach.
Are you unable to take PPIs? Are you finding any symptom relief with liquid antacids? If you have good prescription insurance, I would recommend asking for a prescription for Carafate Suspension. It's very expensive, so you won't want to get it if you don't have good coverage. You could also go with the generic version, but it only comes in a tablet. It coats the stomach and helps it to heal.
Be sure to continue to eat very carefully and be especially careful to eat smooth foods that won't irritate the stomach when it contracts to mash food during digestion.
I wish you lots of luck!