Do I continue to water my Christmas Cactus when I am moving it from dark (14 hrs) to light (10 hrs)?
All I want to know is if my plant needs to be watered during this period.
Certified GKH Gardening Expert
Yes, but there is a little more to it than that. How much and how often that you water will be a much more important factor than IF you water.
You will water when the soil is almost dry down to about 2 inches down. Since it will be in the dark more than it was previously, this means that water will evaporate at a slower rate. You will water less, but you will still water. If you do not, then you will end up with a dead plant.
This article will give you more information on their care: https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/advice-for-christmas-cactus-care.htm