Hi John, and welcome to the club you didn't want to join!!
Yes, your doctor seems to be doing exactly what he should Some urologists do a wash of the bladder immediately after the TURB (while you are still asleep) and some don't. For high grade, non-invasive cancer, BCG IS the treatment of choice, and the urologist needs to wait until the bladder has healed from the TURB...usually 3-4 weeks. In your case, since the tumor was so large and the "open wound" area correspondingly large, his caution in waiting a bit longer is certainly justified. If there is any chance of the BCG getting into your blood system, he will postpone the treatment.
However, IMHO, once the bladder is healed BCG would definitely be indicated. At that point, I would want a really good reason why he wouldn't recommend it.
Good luck to you (and BTW, contributions are always helpful...this is truly a volunteer organization!!)
Sara Anne