Nice plant! Looks very happy and healthy. Not knowing your conditions it's impossible to say exactly how and how much to water through the winter, but as a general rule moniliforme and hybrids heavily derived from it neither need nor appreciate a totally dry winter. I water my similar plants sufficient to keep them from shriveling in the winter, which varies depending on temperature, light, air movement, humidity, mount/pot and potting medium, retention or not of leaves, etc...
IMO cooler temps are the more significant blooming cue, with moisture playing a secondary role in that signaling chemicals may build sooner to critical concentration at bud sites when the plant is less hydrated. Give your plant 2-3 weeks of night temps in the 50s F or lower (my plants of this type tolerate overnight lows below freezing without problems, though YMMV), make sure it dries well between waterings, and you're likely to see some blooms in the spring. Hope this helps!