It's possible and people have worked thruout the program but I wouldn't really recommend it, at least for the first 2 semesters.
In the beginning you will have probably 1 full day, or 2 half...
Deep Breathing: Take slow, deep breaths to calm your nerves.
Positive Self-Talk: Remind yourself of your capabilities.
Preparation: Ensure you're well-prepared for classes and exams....