How interactive is the Google UX Design course?

I completed the UX design course by Google on YouTube. I realized later that I could get the certification through Coursera. Now I can’t really afford to spend the time going through the same lessons again. I could of course review the lectures that are unique to the Coursera course. I’m really looking forward to getting the certification but was wondering how interactive I would need to be. I’d gladly attempt the quizzes and assignments, but I can’t sit through every lesson again. Thanks