I know this sounds like a hack, but did you ever try taking some apple cider vinegar in water after eating? It's a lifesaver for me, near-instant cure for lack of stomach acid. Has to be the ACV "with mother", the cloudy stuff in it. Maybe no longer relevant if you're already taking Betain HCL (I thought that was a medication at first lol), but I definitely have to mention it in case you may have a natural medication-free alternative available that you may not have tried. Don't take my word for it or anything though, def read up on it if you're interested about it!