Just so the OP is aware, booking BWV during F&W at the 7-month window can be difficult. Standard View and Boardwalk View rooms are unlikely to be available at that time. If you book either of those views 11 months out with your BWV points, don't expect to extend the reservation at 7 months with your SSR points. Pool & Garden view might still be available but maybe not for all of the nights you need. Expect to have to wait list for some/all of the remaining nights you need at 7 months out.
Your best bet when using a small BWV contract to book during F&W is to bank and borrow your BWV points (as Jean explained above) and go every other year or every third year. If you want to go to F&W more often then learn to like split stays or purchase a larger contract. Some people (DH and I included) don't like split stays because you end up homeless for several hours on your moving day. We prefer to unpack and settle in for the duration of the trip. We bank/borrow so that we have enough BWV points to book the entire stay 11 months out.