Extra time would be good, hopefully it helps. Unfortunately I seem to just completely blank, literally don't recognise anything in the questions. One of the reasons I decided to take a break from it all and maybe go back in Spetember. Fortunately I was only doing mine part time and paid by work, so I've come away with a qualification, the option to go back and I still have a job.
I feel for you though, it's a horrible feeling and incredibly frustrating when you've put in the time and work and you know the subject.