It depends on the person, and it's something you'll figure out once you're at school. Who's to say that talking to your family is too much? The only downside is that you might be a bit more homesick, or might miss a few minutes hanging out with friends. I have a friend who talks to her mom on a daily basis and another who calls maybe once a month. It all depends on your relationship and how much you want to be on your own.
It doesn't hurt to home phone once a day for a short conversation. I didn't more because I didn't find the time to, but my roommate did. If you get homesick easily, I would advise against phoning home every day.
We want you to have the best college experience, so Plus-U moved in with Unigo. You're now part of the most extensive college network on the planet, with incredible resources to help you at every step of your journey.