S007 i am not a bio student but i do psych and i would like to say same approach should apply.
try using vcaa exams whenever you can, ESPECIALLY in timed conditions. company exams are good to do untimed but with vcaa ones, the question types are similar to what you're getting this year.
for completing/marking: sit the whole 2.5 hours, just like you will during the exam. marking should take around 1-1.5 hours if you do it properly. with your mistakes, identify WHY you have lost marks and fill those gaps in your knowledge- this is why it's quality over quantity.
