I've had somewhat the same experience. I have a final today in my Advanced Human Phys class. I did force myself to study over the weekend because recently we have studied blood pressure control and then the kidneys. A big part of what we studied was the Pharmacology of the various meds, so I kept reminding myself that I really needed to learn this stuff. In one of my electives I am still studying because I have a quiz this week and if I do well, I don't have to take the final. So, while the pressure of getting accepted into the program is off, I'm trying to find other reasons to motivate myself to study.
Next semester will be a different story. The only class I must take is Econ and I could care less about it.