@pol7 your history sounds a bit like my husband’s. Tho his initial tumor was muscle invasive in a small diverticulum off the bladder. He was treated once with gem/doce after surgery to remove the diverticulum and tumor. One lymph node was positive so instead of continuing that he had Cisplatin infusions for 6 months. Then he was a BCG failure once on maintenance BCG. He tried Keytruda but no improvement. He finally elected radical cystectomy with neobladder as he was tired of the pattern of repeated Turbts. He is cancer free now 4 years after that surgery. Not really helpful for you facing gem/doce but likely others will chime in with their experiences.