The entire point of stuxnet was to covertly sabotage the centrifuges, so it wasn't clear that they were broken until months or years later. 2 weeks isn't remote

The entire point of stuxnet was to covertly sabotage the centrifuges, so it wasn't clear that they were broken until months or years later. 2 weeks isn't remotely long enough for Iran to know they were sabotaged.