You need to receive advice from a motoring law specialist as to whether you ought to plead guilty or not guilty. As the moderator has said, if you don't plead guilty as soon as is possible you will not benefit from receiving full credit for your plea. Often, a skilled lawyer can argue that credit should reduce the ban.
If you want to receive some advice call us. We offer fixed fee representation and will give honest advice so you know where you stand. We will also consider whether there are any defences that you can run, whether the Prosecution can prove what they say about you and whether, if you want to plead guilty, any special reasons apply in your case.