must not make a "winter rest" pronounced.
Leave to dry the substrate, and then wait again before watering.
the time of watering in winter is highly dependent on environmental conditions.
Naples is a city very humid in winter, and I can spend a long time between watering.
but if you can not give a lot of moisture must be aware that dry well.
if not watered properly during the winter instead of flowers makes adventitious vegetation.
I hope I have clarified