My son went off to college a few years ago and we've established a pattern of having him call us every Sunday. TBH I don't have a ton to talk about (and am not really a talker), I just want to make sure he's ok and everything else is pretty inconsequential.

I would recommend setting expectations early around weekly calls so they become a habit. Even if you have nothing to talk about you can small talk for a few minutes. I suspect you will have a lot to talk about if your child is starting university.