Had a TURB-T Monday before last, got the pathology back in 3 days, sounds like a similar tumor, mine was about the same size TaG1 Papillary non-invasive. Didn't have a follow up PET. I'm far from an expert, but my research is recent. It seems that if there is nothing else, the usual protocol is to have periodic (3-6 mths) cystoscopy to catch a recurrence.
But 1 thing I do know solid pathology is paramount, getting the cancer accurately staged is very important. Sounds like common sense but a relatively high percentage of tumors seem to be under-staged.
Ther eare many here with far more depth and breadth of knowledge than I but thought I'd pass on what I have found out.