NVQ Level 3

Right well, Im all booked in and registered take my first exam, unit5, on 2nd Dec. Im now rather nervous, as you most of you are aware I work in an accounting environment, and am taking a book keeping course on wednesday and Thursday, start studying for unit 5 on Saturday. I think Ive made a mistake by looking at a past exam for this unit and am concerned as to whether or not Ill be ready to do it! With this book keeping course and the studying I will do for unit 5 will it give me enough knowledge to pass the exam? Help me please lol!!!!!