You really need to do the diet, exercise, mental health care, the supplements for at least 6-8 MONTHS, and change your lifestyle, if not longer, make sure you get past better, past remission, and get back to being healed.
I'm about to commit to 6 months of the Acid Watcher Diet, go full-tilt on the extras (just dropped $90 on refilling my supplement stash), and follow it to the T, as well as just scheduled a meeting with a new GI doc. Scared of that Esophagus Tube Test thing, but thinking that I need to be treating this as Esophagitis and not Gastritis.
I would definitely dispute that Paleo is the best, or even a good diet for Gastritis. Granted, everybody is different, but when even the people who wrote the various Acid Watchers books are now saying that a Vegan Diet is best for gastritis (which is why they updated their books with so many new Vegan recipes). There is a lot of evidence on how tough meat and eggs and cheese are on the digestive system, and the dominant medical research these days on the benefits of a Greens and Grains Diet vs High Fat/Low Carb, side with the former, not the latter.
Again, it's your body and everybody is different, but I would never recommend a Paleo or High Fat diet to a person with gastritis. At the very least, follow the Acid Watcher Diet, especially her newer books, they work wonders.
I've done Vegan (Forks Over Knives style), Vegetarian (eggs and cheese) and Pescetarian (fish, eggs, cheese and dairy) in the 8 months I've had Gastritis, and the only times I've gotten better and the symptoms vanished and conditioned improved, is on the FOK Vegan diet. To take the pressure of your digestion and eat clean, organic foods, is so much kinder on the body.
Be gentle in yourself, give the body the time it needs to heal, the time to change your lifestyle and life, and even then give yourself the room to accept that you wonâ€™t be the way you once were, but itâ€™s okay, the new you might not be able to eat onion rings again, but the new You is a lot stronger than the old you.
Diet: Acid Watchers Diet