i would personally say, it depends on what your goals are.also for some people, they want to strive for the best i.e. 99.95. others want to just get their atar enough for their desired course.
as for me, i went home everyday 430 ish and studied till 10 with 30min dinner and maybe a few 10 min brakes. that was because i wanted to get 99+.
so it really depends on your mindset and what your goals are.