Study routine

Yes, it should be enough time. Just make sure you plan to leave about two weeks before the exam to spend practicing questions from your Revision Kit.

Thanks! As English is my second language, is it worth booking question and answer class with Kaplan? Or any tips to pass exam first time?

I don't know anything about Kaplan's question and answer class, but I doubt there is much to gain (especially as English is your second language). The only way to be sure of passing the exam is to study hard and then to practice hard using a Revision Kit. If you have any problems with either the lectures or with any of the practice questions then ask in this forum and I will explain. If you ask nearer to the date of the exam I can suggest tips as to how to approach the exam itself, but they are irrelevant for the moment.