Multiple Tests?

I had a positive test 2 years ago that indicated mild gastroparesis. Unfortunately, due to testing a Mounjaro (dumb, I know), what I think is GP has come roaring back. I’ve had an upper endo, colonoscopy and SIBO test and beyond some GERD, no real smoking gun.

My doc isn’t keen on testing me again for GP but this round feels much more severe. He hasn’t offered any help except for low FODMAP. Should I push for another GP test being that it’s two years later?