Should I slow down?

I was following along well at the start, but as topics became more and more complex I have gotten a little lost in the sauce. By the time the challenges come around, I get only a little of it correct. I have been going through video after video, pausing and taking notes as I go along. I have no coding experience prior to taking this course.

should I slow down and study previous topics more before advancing? Or will it come to me easier as I progress?