Hello., your orchid is a valuable and desirable orchid to have since it attained an FCC certificate in Oct. 2013. I understand that you don't want to hurt it. Are you growing it indoors? Most orchids enter dormancy because they get clues to do so. Shorter days or daylight and a drop in temp. are signals. If your plant has not dropped its leaves is because it hasn't received these signals. Please give me more info to give correct recommendation. I would continue watering as normal. The problem is that if you want it to bloom again, it must go through a period of dormancy.