My parents didn't visit me when I was a student, and I don't visit my kids at uni, unless they specifically invite me. In my view, parents visiting more frequently tends to be about the parental need, and not the need of the young adult. It's really time to let go, at least until the end of each semester.
The parents who visit very regularly, every weekend say, just don't realise that they're actually getting in the way of their offspring meshing into the university culture.
So, to answer the question, yes, I think visiting fortnightly is excessive. It would be easier for you if, as others have suggested, you meet away from your accommodation.