You should join the pre-dental student club at your University.
Usually, the pre-dental student clubs hold mock DAT exams. These mock DAT exams can help you prepare for the exam day since you first-hand experience what it feels like to be examined with a proctor in the room. This is a better option than practicing yourself because you won’t be able to ‘cheat’ or take regular breaks.
Another benefit is that pre-dental clubs invite Dental students to give tips on how they prepared for the DAT exam. They also share their experiences of being a Dental student and what you should expect when you get into Dental school.