Any info re: shamrock plants?

Hi there! I just got a shamrock plant and did some reading up on it. Apparently, there is a dormant season when the leaves yellow. You're supposed to stop watering and leave it in a cool dry place for a couple of months. I read that the dormant season is in winter--is this true? Or can it happen anytime? Does anyone have any more info about this adorable little plant? Thanks very much!