The only preparation you need for AWA is going through Chineseburned's posthow-to-get-6-0-awa-my-guide-64327.html?highlight=ml313
AWAs do not count towards your 800 score and schools look at the 6point score only if you have low verbal and poor essays. It is very easy to score a 5 in AWA. So, do not put much effort for this section.
Create a template and try one essay if you get a chance. Make sure you take a full length Mock Test (Awa+Quants+Verbal) to gauge where you stand on Stress Management. After that you should be all set to book a date next week.