I am scared about our remodel now. I get that they don't just do one project at a time but how bad is too bad to work with?
Do not be worried! Contractors handle multiple projects at any given time and they are experts at juggling. Give him a call and let him know that you are concerned. He will alleviate any worries you have.
Were you given a project timeline up front?? If so and it is less than that time still, do not worry just yet.