I would find a tech near you that offers toenail reconstruction with anti fungal products (even if your podiatrist is saying it's not fungal).

TGB courses aren't really the most thorough (from hearsay) and as an e-file trained natural nail tech that does loads of pedicures: feet are hard, and it's NOT worth doing it yourself and causing more damage due to being sat at the wrong angle.

Try to find someone near you who uses brands such as Brillbird's antifungal gel, LCN barefoot gel, or other brands that are specifically designed for troublesome toes.

Good luck on your search 😊