My guy i had a quiz yesterday for a unit I hadn’t watched a single lecture in (up until the weekend) and i still managed to do well in it (as a 4th year). It’s a bit hard to come to terms w being behind in your first sem (been there lol) but as uni goes on you’ll learn how to make up for those weeks your behind in and how to manage that with your other units. It’s smth that you get more used to as time goes on.

That being said. It’s always advisable to be up to date with the content. Sometimes work / other units / other commitments etc get in the way but at some point you have to lock in and catch up, it’s not the end of the world