If you are harvesting I would not wet the soil because you want the plant to know it’s life is coming to an end. If you are turning of the lights for the flowering phase. I still wouldn’t because you increase your chances of root rot, disease or pests. If the soil is really dry then I definitely would do a very light watering.
Heya,
I like to dry out my plants before chopping, in your case not watering before the darkness period. You could water it but it would also just add to your drying time.
Cheers
I dont put my plants in darkness, shrinks your buds, but if they were needing a drink before then, then I would give them just a little water. Cheers friend