Paul,
Did it say "T1"? What is commonly referred to as "superficial" (which not a great word to use because it makes it sound trivial when it isn't) is typically called T0.
This makes a HUGE difference. If is T0G1 (only on the surface and not into the innermost wall of the bladder and low grade) then "wait and see" is typically the recommended action.
If you were to have a tumor come back in 90 days then, by definition, that is not low grade.
Low grade has a higher recurrence rate but they are very slow to form and grow.
Low grade is a "good thing"!
If it truly is T1, they should do a repeat TURB to be sure they got clear margins all the way into the muscle. Even low grade can get to be invasive and standard protocol is a follow up TURB. At this point nobody knows how long you have had it so if it is T1, then err on the side of caution.
YOU are in charge. Learn all you can so you can be an active player (aka the driver) in your treatment. Ask them questions when they deviate from the standard of care called out in the NCCN guidelines.
Mike