If you can check on your plants daily, just leave them out there and check on them as often as you can, especially after temps drop to freezing. Pick them if they start to rot or are finished. They will prob die when temps are in the low thirties every night and low fifties/forties in the day. The cold temps will only hurt your buds, but if they aren't finished yet what can you do? Premature buds are worse than buds that have been exposed to some cool temps. Leave them out there and see what happens.