I think you have a good chance!
Right now it seems the rooms that mostly aren't available at 7 months are the studios. For now anyways. And they might even be attainable at 7 months for certain off-peak times.
I'd just do it right at the start, the morning of your window, to be sure though! And this year is a good time to be doing it, since things will probably look very different once it sells out.