When I did my Science undergraduate, it was definitely possible to summarise all the content and in essence, be revising at the same time. When SWOTVAC came along, I would revise these summary notes that I had made. It's kind of at your own discretion if you choose to summarise all the lectures or not. For anatomy I did, but for biochemistry for instance, I only summarised the lectures that I had trouble with and only used a textbook when necessary (which wasn't much). With 5-6 weeks to go, it would be impossible to summarise now as you would just be wasting your time. But then leaving 72 lectures or whatever crazy amount you have for your core subject would be silly. Skim through the lectures, find the ones that you struggle with and summarise those. I'm using the same approach to study as I did for dent now and its working fine.
Wait... I assumed you were in 2nd year, but hopefully you get the jist of what I'm saying.
If you are just summarising lecture notes because other people are, then don't waste your time. Be efficient, when you are summarising your lecture notes ACTUALLY revise.