Newly diagnosed – BCG in a few weeks

I was diagnosed with bladder cancer last month, had a tumor removed and have high grade flat cell cancer. I had to do another biopsy last week because they didn't get enough healthy tissue to determine if the cancer had spread to the muscle.

I got good news today that it has not invaded the muscle nor is it in my prostate. I will be starting BCG in 3-4 weeks after my bladder has healed.

I was wondering if there is anything I should be doing ahead of time or things I should know going into the treatment that might make it easier.

Also, has anyone had other treatments for similar cancer that have been successful?