@MarchHares you haven't specified what kind of support you're looking for, nor what support your DC might actually need.
I teach in the humanities, in a top tier university, but the principles of teaching at any university are much the same. We expect students to get on with it (as they tell us they're SOOOO passionate about the subject in interviews!).
We expect they will attend all scheduled lectures, seminars, and tutorials.
We expect they'll do the preparation for these timetabled face to face teaching opportunities - in my field we expect around 3-4 hours of individual or group preparation/study for every hour of face-to-face learning & teaching.
We expect that if they're in difficulties, they will get doubly conscientious about working through the material, that they will attend seminars and participate - ask questions, join in the discussion. We learn through collaboration and participation.
I don't expect to have to do individual extra tuition for students who don't do the work. I don't expect them to value their time over mine (the number of students who tell me they "can't" attend the seminar but could they book an individual tutorial hour to catch up? Well, no.
If they are having difficulties beyond the academic work, I can give them advice about how to approach their studies, but welfare and well-being issues are dealt with elsewhere. I do think parents and their DC need to get their heads around university study as advanced learning which is - by definition - hard work.
So if you could outline what you anticipate might be your DC's issues, we might be able to offer more specific suggestions?