I really screwed up when I brought those new Dens. back from Miami in Nov. I made notations on the tags. Somehow I marked Den. macrophyllum as needing sun and a cool, dry rest.
Well, I thought it was right on track when all the leaves started drying up and falling off.
Once I realized what was going on I rushed to rehydrate, move away from the window and warm up. I think I see some new tiny green flushes at the bases of the pseudobulbs but I probably set it back big time.