Can I reschedule my flight and reapply for Thailand Pass if my Non-Imm B visa is approved early?

I applied for a Non-Imm B visa application at the Thai Consulate in Chicago on 15 December. I anticipate this will take at least another week for approval, so I booked a flight for January 6 just to be safe. I already submitted my Thailand Pass application with the January arrival date and was approved.

IF my visa is approved early, could I reschedule my flight for an earlier date and simply reapply for Thailand Pass using the new date?`