I also had High Grade/aggressive NMIBC. Finished chemo back in Nov 2024 then had cystoscopy Jan 7th. Dr was concerned about red inflamed areas in bladder so opted for another TURBT with Blue Dye to look for cancer cells and then do a biopsy. Had this done Feb 4th, little scraping necessary and all samples came back negative for cancer. Hurray! Now starting once a month chemo for 3 months then another cystoscopy to look inside and will go from there. May have to do chemo monthly for several years if continues to work. PS _ I had BCG treatments early last year which did not work. If I can keep the C away with monthly chemo I am fine with that! Good luck to you!