Assalamu alaikum ustadh. Sometimes during the lessons, if i get distracted while i’m listening i keep replaying it many times, it may happen every 10/5min. since for me to complete level 1 I would have to finish all lessons, does it mean i have to listen to the entire lesson attentively?

Subhanallah, more hasanat you get. Find a way to make you concentrate more, Insha'Allah. You don't have to repeat a lot, especially if there is some kind of waswas that might affect your studying; you can continue through so that you don't keep on repeating. However, when there is a need to repeat something to learn it effectively, then you can repeat it twice or three times. I do that.