yeh, it wont do much now. might aswell go sleep. even that would be more productive. the umat isnt a test where you can stay up late and cram knowledge like ur average maths/science test. so go sleep now, those of you who havent already.
Yes I did read your question and don't be so condescending, if you have been preparing since the start of the year, I think you would have done more than suffice prep.
Even for final prep, I personally wouldn't do anything the night before! We get countless lectures in med about cramming, etc, prep the night before, some of the research given to us even shows it may be detrimental.