I think that depends on your learning speed and how much time you are dedicating. I think it also depends on the type of assignment. I plan to take the lesson at least two times and do it for week max. Just remember to fully grasp it, let no doubts left behind

hi there, believe Stan and Marshall addressed this in one of their podcast episodes. If I remember correctly Stan mentions not to spend longer than 2 weeks per assignment. You are not supposed to be an expert at a specific assignment before you move on to the next, and you can always come back and redo the same assignment later with the new knowledge you have acquired. As he mentions, oftentimes new lessons or assignments might help you understand a previous one better. hope it helps!