Have you done the Lev 3 Manual online mock exam yet ? If not, go and do it as this will give you a very good idea of the actual exam.
Print out each screen as you go along, or wait until near the end and go back and print them (but watch your time-out as you have 2 hrs which you cannot pause). This will enable you to study the mock print outs in your own time.
At the end you will also get a report showing your answers to the actual answers, so along with your print outs, you can see where you went wrong.
The online mock does help, I did my own just a few days before the actual exam and it was very helpful.
Good luck, let us know how you get on.