Summer and Easter are actually slow times for
DVC, it shouldn't be a problem.
When people say "nothing was available at 11 months", what they really should be saying is: "I wanted to book a category that is very difficult to get because there are just a few rooms and there is a lot of competition and I couldn't get it. There are plenty of other options but instead of booking them I'm here sulking".
Maybe the only resort where it could be difficult to get any studio at all is CCV at Christmas. I think that if you are ready to book right at 11 months, you should be able to get something at all other resorts. Maybe not your choice of view.