https://www.joecheated.com/

State capitols should be a very distant plan

...C. Protesting empty parks and streets is pointless.

Plan B should be their local offices/homes! If they try to avoid DC via remote meeting, this is where they'll probably login. At the very least they should be getting phone calls from staffers/family about the angry mobs outside their offices/homes. The goal is to get in their faces!