Welcome Neelloo2626,
First, you are at a very well respected hospital and your surgeons advice is on the spot. So, you are in good hands. Also, good medicine says do the least invasive treatment and only go more if the need arises. The cystectomy surgery is rigorous. BCG is the gold standard in your fathers situation. I am 11.5 years out cancer free with several on this board at least that. The neuropathy and swelling. That is a question for your med team. I do believe those symptoms are a possible side effect. Nothing says one has to continue forever on this although many protocols call for different time spans. By the fact he has gone through one cycle is very good news.