In preclinical years of med school, I found most lectures a COLOSSAL waste of time. We got preprinted handouts of the lecture material at the beginning of each course block, and basically, lectures consisted of the lecturer reading those handouts back at us. Some people are audio-learners, so this helped them, but I am a totally visual learner.
So about a month in to MS1, I too was feeling like the whole day was wasted in lecture, and there was practically no time left to study. So, I started skipping lecture and studying in the library instead. Our first course was anatomy and had 2 exams--I went to all the lectures for the first one, stopped going to lectures for the 2nd one. My score on the 2nd exam ended up being much higher, too.
Thereafter, I went to maybe a total of 5-6 lectures throughout MS1-2. I had tons of time to study and for free time, sleep, exercise, etc. I wasn't always as disciplined as I could have been, but still did solidly. If you're disciplined about studying, the sky's the limit and the burnout will resolve.
Enjoy MS1 and 2 while you can because once MS3 hits, you become a slave to the hospital for many years to come. If i had to do things over again, the one thing I would change is I would have felt less guilty about skipping lecture and I would have relied less on the oftentimes error-prone handouts. Medical knowledge is medical knowledge. It's all in the textbooks and review books. There is nothing that the lecturer will tell you that isn't in the books, said in a much clearer and more standardized way. One thing you guys will come to see is that different people will tell you different versions of info (sometimes contradictory). Basically, what is in the textbooks or most sources is what will be on the boards.
Note: In MS1-2, I did go to every small-group PBL session, though, because those were actually useful and fun--I still remember some of the cases to this day (it's been 5-6 years now!). PBLs prepare you for the medical thought process, which is key. So, dont skip those.
I miss med school!
(feeling some residency burnout these days. . .)