A book I read recently called "Why Stomach Acid Is Good for You" has a section on bitters (which I believe would include mint) are good for reflux - their prescription is chew/eat bitters ~5 minutes before a meal.

Mint is actually bad according to my GI doctor because it relaxes the muscle and allows more acid into the esophagus?

For me mint was a trigger of worse reflux, but apparently it helps some people.

I have a prescription for daily 40mg pantoprazol, which reduces the amount of acid my stomach produces.

But I've also noticed that it doesn't work as well if I eat too much or eat too late in the evening. It makes sense that your stomach produces more acid in response to eating, so simply eating less can also lead to less reflux. Losing some weight would be a nice bonus for me, but I haven't been very successful at that yet.

That said, training my oesophagus to keep the acid in my stomach also sounds like a good idea.