I just borrowed this book from the library: Dropping Acid: The Reflux Diet Cookbook & Cure by Jamie Koufman, Marc Bauer, Jordan Stern - all except for Bauer are medical doctors, Bauer being a chef.

Have not read it, though I think the gist of it is avoiding low pH / high acid foods... a quote:

Avoiding acid means consuming nothing below pH4. However, if your symptoms are severe, it's well worth considering the even stricter induction phage diet for two weeks, in which you eat nothing below pH5.

The recipes are high in sugar and carbs - so you're not borrowing this for those - but the list of high and low pH foods seems helpful.

Green is good. Red is bad.

https://i.imgur.com/4ELjb7w.jpg

https://i.imgur.com/oDtaqDT.jpg

https://i.imgur.com/kRLMeoJ.jpg

https://i.imgur.com/1JPQGNb.jpg