TG rocky,
I have been diagnosed as T1, HG, bladder cancer recently. My urologist gave me the same options -- intravesical Immunotherapy or R/C. Unlike your urologist, my doctor gave me the pros/cons of each treatment, and wanted me to decide with my wife.
I believe your urologist will have to look inside your bladder to see if you are responding positively to the treatment.
I decided to do what ever it takes to be with my wife because it took me a life time to find her. I thought we were going to grow old together, but now I will take what my body will give me to be with her one day at a time.
Much care, Lee