This is the time to do it. You are not alone and that happens sometimes. October is the perfect time and Prep is the perfect place to sort out our thinking about our stories. Even during the writing in November, some of us end up changing a few major elements.

I am on shaky ground, too. Right now, I have a group of six people and I have them as the protagonist as a group, but I may pick one of them as the protagonist leader over others, once I know where the story will go, who will outshine the others, and who will probably become sidekicks.