Mik5: Sounds like your professor is already setting up the power struggle to unload more contradictory views throughout the semester.
—Potential issues such as exams on Yom Tovim may come up here, with the professor being unaccommodating.
I would keep as much correspondence in email as possible, for your records. That way if anything comes up you can go to administration with verification of you stating your religious needs and etc.
Though… glad that you asked a shaila and let us know.
Sending you blessings for success and smooth and strong studies 🙂