I would say yes, but it depends on how dedicated you are to studying! I just took the OAT yesterday, and it went well. I got my Kaplan book in April and reviewed a little, but didn’t start studying hard until school got out in May. So I studied for about a month and a half. I would highly recommend using Chads videos and quizzes as your primary resource and then using Kaplan for back-up and review. Kaplan is good review, but Chads gives you strategies and review that is very applicable to the test. I will be making a post about my experience and will go further into details there, but Chad is a lifesaver. The test is much easier than the Kaplan practice tests and about the same as the free ADA exam. You got this. Good luck studying!