I would suggest using your dive trip to get more dives under your belt before your AOW. Before you go see if you can speak to the instructor you’re going to do AOW with and see if they can tell you what AOW subjects you’ll do on the course. Armed with that list you can speak to the DMs that you will dive with and ask for pointers to improve. For example if you are going to do Peak Performance bouyancy on your AOW get the DMs to give you a few pointers on how to improve. The same with navigation. If you can practice that one while on your triup it will help on the class when you get home.