University exams first year Watch
As brainzistheword says, it depends on how effective your revision technique is. I've just posted about the SMART revision technique on another post, but its relevant here too.
It's easier to revise if you revise SMART not long.
o Set yourself goals.
o Make study techniques that promote greater results.
o Ask for help.
o Reward yourself for progress.
o Take a Break.
The important thing I found was to discover what type of learner I was (remember or Google VARK to discover this). Once I knew this, I could implement the best type of revision for me. Revision really is an individual thing.
Has your university said they'll be running revision lectures? They normally give you an idea of areas to study.