2:43 PM, Wednesday March 31st 2021
Heya! So yeah, my opinion would be to start lesson 1 again, so much time has elapsed that it would make a great refresher and it wouldn't do any harm! There's actually new videos that umcomfortable has released so the resources have improved since you last tried!
HOWEVER, all that being said, if you feel like you still grasp certain things, like superimposed lines and whatnot, you could skip over that, and if you draw boxes in planes and understand perspective and whatnot, you could move on! It's really up to yourself, but that's just my opinion haha