I did the LEEWS before I started law school. I gave myself a week to work through the program. Miller is kind of lengthy in explaining whereas the primer sums it up in a few pages.
You need to start NOW (or yesterday as the other posting mentioned).
You need to work the final exams now. Get them from your law school's library or online (we have ours on the email system).
Even if you have not covered all the subjects, you can work parts of them and compare your answer to the model answers. For example, we are doing Negligence in torts right now. We have covered duty and breach, so I am writing on those two issues for the practice exams.
Also, don't just keep up with your reading. You need to work ahead. You should be done with all your cases, outlining, etc. at least 3 weeks prior to study period prior to exams. Then you can really focus on writing practice exams for more time than the study period.