Watering succulents and cacti in winter is a guessing game around here in winters. That is if you can keep the dogs tails from catching on the cactus spikes of the larger ones. rofl: yes it happens…
Bringing them all in the house and then all of a sudden they become needy lil monsters demanding attention… while all summer long outside they seem to thrive on neglect and a touch of water.
In my experience lights / no lights there always seems to be a few losses in winter with them as it is cold dreary and usually 100% humidity in the house. So much so that I run a dehumidifier all winter in the house and water my plants with the gallons of water it collects weekly.
So in my humble opinion when optimum conditions are no longer available when plants are wintered inside it's a touch and go situation to make them all happy, all the time in zone 6B. Lot's of trial and error…