Weeklong sleepaway college experience for rising HS senior?

Our third child is in his junior year, and wants to go away to a traditional four year college.  However, he experienced pretty significant anxiety during two middle school trips (outdoor education and a sports camp) and hasn’t slept away since.  His anxiety is otherwise resolved, and he may be just fine, but we’d all like to give him a trial run at one of those weeklong live-in-the-dorms college experiences that have cropped up everywhere.  Since we aren’t doing this as a leg up for college admissions, we’d prefer not to pay the $ 5000 that a lot seem to cost.  Because of the history, we’d prefer it be within about a 3 hour drive.  Honestly not that picky about what the week consists of - does anyone have any suggestions for this weird ask?