There are a couple of ways to approach this. First if you already have a ressie for another type room are you wait listed to switch. Or do you not have a ressie and are just wait listed trying to get one? If you have points available to you I would waitlist day by day. So as your days come up MS will book them for you. Or you can wait until the whole time of your stay is available and book it........anyway just keep calling MS. Good Luck....
Brownie