I would start with detoxifying glyphosate, which is known to damage the tight junctions in the gastric mucosa. Almost everyone is toxic with it...
I'd also supplement with high-quality probiotics, fiber, shilajit (humic & fulvic acids), collagen peptides, and vitamin C. If you're OK with needles, I would suggest looking into BPC-157 which can have dramatic healing effects on the gut.
I've put together a preset for you which will detox glyphosate and also apply the frequencies of some beneficial healing compounds (including BPC-157), but it requires a newer version of Spooky2 (any build greater than 20200612) which you can download from John's beta site: https://cancerclinic.co.nz/downloads.html
For more details, please check the link: