Yes, preparing yourself for exams with Anxiety Free is a good idea. Use it for about 2 weeks in the lead up to the exam. That's more time than enough to work the anxiety issues.
The preparation for reviewing is another subject. You might like to switch Personal Genius with New Behavior Generator for a few days to make use of the scheduled review time. You've scheduled time for review right? If not I recommend you do that.
Get Around To It is a good Paraliminal to pick up when you know what you should be doing but not doing it. One or two listens can get you going. It's one I don't recommend listening to before bed. You want to act on the inspiration, motivation as soon as that block of time is available. And if you happen to not know when that is going to be it can keep your sleep busy searching. Use it in the morning and you'll look forward to taking action at the scheduled time. Or make the time.
Alex