I had a similar question a few days ago since i'm planning on starting my class tonight. Kagome said her class is on a Sun and it's being released tonight for her.
My plan was going to be to turn up to class, find out if they were doing the new plan tonight and if they were join up. If for any reason this wasn't the case then I was just going to tell them they can expect me back next week! I've recently been doing SW so it's going to take a bit of effort on my part to get my head around the WW way fullstop without having to learn one plan and then relearn a different version of it the next week!