It's not at all unusual for my trees to start running, then we hit a cold snap and the run freezes for a week or more. Then when it warms up again, the run resumes. May need to check the taps to ensure that they aren't pushed out a bit by the freeze. Leave your taps in the trees. Don't *unplug* them til the season's done.
If however, you don't want to collect sap for a few days, give it away or dump it.