Booking Disney Tokyo Fantasy springs with DVC points

Hello, we have the Disney Vacation club here in the US. I’m visiting a friend in Japan and we both want to book Disney using my vacation club AS SOON as available as I heard Fantasy Springs rooms sellout within minutes of release. For context I live on the Eastern Standard Time zone New York. Can someone tell me exactly how I would book a stay at the Disney Fantasy of the Seas Tokyo using our Disney Vacation Club, and what day and time (EST) I should call to make sure I can book for May 20-22 this year?