Re: Is there such a thing as cancer nutritionists?
Nope, I haven't gone to a nutritionist for that (although I've seen one for diabetes management.) I have, however, been taking a very high antioxident vitamin called oncovite which was developed by Dr. Donald Lamm, a leading researcher in bladder cancer. My own urologist also recommended this vitamin. So far, knock wood, I'm 7 years post-bladder cancer with no recurrences. Is it the vitamin, or is it just luck...who knows?
As for the BCG treatments, I'd say it was good advice until you developed recurrences; now, once you have the surgery, it'd probably be a good idea to have BCG to prevent further recurrences. I'd also suggest getting a second opinion on the pathology slides. It's possible that the grade was misdiagnosed. High grade Ta's are more likely to recur than low-grade ones, although it's certainly possible for low grade tumors to recur, too.
The good news is that you've caught this early. I wish you good luck in treating the current tumors and good luck in finding a way to prevent recurrences.