Thanks for the reply. Sorry to hear that your plant isn't very active. In my experience, once the main plant stops growing it doesn't restart. But the leaves tend to keep the corm energized until more pups sprout. My plant is in the same situation as yours, I have it under a grow light in a cool basement. I mist daily but water only once every 2 weeks or so.
I am still trying to get a patupi to grow but this one is proving to be a challenge.