metformin honestly sounds like it’s perfectly suited to your symptoms and is probably good to stick with.
Doctors are really pushy about GLP-1s nowadays because they’re weight obsessed but one of their side effects is boosting insulin production which sounds not helpful in your case.
But yeah, stay the course! You’ve got a really solid grasp of the issue and that puts you ahead of 90% of patients (and maybe even some doctors tbh).