I never know of the bulb is going dormant or just plain dying. It's so hard to keep them in good shape over the winter due to reduced sunlight and managing water correctly with dry indoor air..
I'd much rather allow it to go dormant when it gets cold outside and put it to sleep in my uninsulated attic. My winters are so long and there are so many plants I have to keep healthy in less than ideal conditions, fighting for south facing window space, if I wont hurt it by exposing it to cool dry temps so soon after it blooms, then that is definitely what I want to do.
