We did the same as happy1. The local college was not our student’s (or our) first choice simply because it was too close to home and we wanted her to experience getting away. Yet, in the end, the local college was the one that was the best academic and financial fit. It was/is not the best social fit.
We treat our student like she is 2000 miles away. It helps that she doesn’t have a car. We arrange weekly Facetime conversations and otherwise leave her alone unless she contacts us. About six weeks into the semester she got a little homesick and mentioned coming home for the weekend. We resisted the urge to bring her home and, instead, took her to lunch, bought her groceries and dropped her off again. It satiated her need to get away but kept the school bubble separate from the home bubble.
As far as seeing HS friends, most are away at college as well. Many did not come home over Thanksgiving but she hung out with the few that did.