No. I would make the reservation for the first 3 nights and then call MS to transfer the points and add the last 3 nights. You can check for availability before you make the reservation for the first 3. That strategy will give you the best chance to get what you want.
If you are booking at 11 months, you are pretty much guaranteed the last 3 nights. If you are booking at 7 months, only a resort owner can jump ahead of you, and at that point, it's not likely one would.
Good luck.