Lycaste Nobuo—isn’t this thing deciduous?

[RockPebbler]

I got a Lycaste Nobuo about 2-3 years ago and it grew some comically large leaves. Some leaves have senesced and dropped from the oldest pseudobulbs, as have most of the leaves originating from the base of each pseudobulb, but the leaves originating from the top of the three youngest pseudobulbs have just persisted for 1-3 years, and it has not bloomed under my care. From what little I have been able to find online, this hybrid is supposed to be deciduous. Should I do anything to encourage this? I gave it a bit less water over the winter. It’s in long fiber sphagnum moss, fir bark, and perlite and is near (not directly next to or under) south facing windows and grow lights. It’s my first/only Lycaste so I am not very knowledgeable on these.