You’re setting my expectations high for your next prediction
Wouldn't "2-3 weeks on a workday" be a default hypothesis for this kind of thing?
If it's truly too dangerous to use you'd expect it not to be reversed at all.
Why would you expect a typical policy decision to be reversed within 3 weeks? If policies are going to be reversed within 3 weeks just don't do them in the first place.
Normally export controls once introduced last years to decades.