Dx with gastritis--can I still take NSAIDs occasionally?

A year ago, after an abnormal FIT test, an EGD showed gastritis with erosions, but not too bad, and no H. pylori; colon was clean.

I HAD been taking a lot of Aleve--800 mg/day--for arthritis and general achiness (fibro) for 10 years, and before that took daily doses of Advil for another 10 or 15 years. So a lot of NSAIDs over a long time!

After the diagnosis, I laid off the Aleve (a year ago) except now taking smaller doses very occasionally--sometimes once a week, sometimes once every few weeks--when I have too much pain (maxed out on Tylenol already).

I have ALWAYS been careful to take the NSAIDs with food and/or a lot of liquid.

I need a knee replacement but want to postpone it. I'm wondering whether taking smaller amounts of Aleve--say, 400 mg/day, maybe once or twice a week, would re-damage my stomach lining--which I HOPE has healed by now. I can't tell, because I didn't have stomach pain or other gastritis symptoms to begin with--it was only found because of the abnormal poop test.

Any advice?? Thank you!