Clarifications, corrections and differences of opinion:
Immunizations do wear off over time. A vaccine's effectiveness declines over time. Just because you had an immunization in the past does not mean that your titer will "be ok". Only the titer can determine your level of immunity and if the results fall below a certain range, you will need to be re-vaccinated. It is a game you play with your wallet: you can choose to have a titer first. If your antibodies are adequate, you are done - submit the results of the titer. If your antibodies are too low, you will have to be both re-vaccinated and have a second titer to prove your level of immunity. (The school does not accept the immunization record as proof of immunity. They will only accept the titer results.) So that route requires two titers and one immunization. The other option is to just have the vaccination and a subsequent titer. That option requires one immunization and one titer. You will never know if the first titer would have been adequate, but it is the most conservative route financially if you are an older student and it has been a long time since you were vaccinated.
Planner: if money is tight, this purchase is totally unnecessary. Any calendar with four months on it will work. As long as you can write on the lines, in the boxes or whatever, that is all you need to track your assignments. Nothing fancy or new needed.
Sleep: if you are organized and stay current, all this stuff about studying 21 hours a day is not true. I have watched the Gators and Jags play, gone to my kids' games, had a few beers and I currently have a solid A (>93 average) in all four classes. Yes, I even saw the Harry Potter movie this weekend. I still have finals to go to prove this, but don't think you will need to spend every waking hour on school. Spend 4-6 hours each day with reading, studying and assignments. Keep focused, organized and current - that is my advice.