Perhaps contact a Tibetan Buddhist teaching center. They have meditation and introspection programs ranging from weekend intro courses to multi-month retreats where you isolate in a cabin on site (but you are checked in on). I know a few who have done it for a week or a month, and all say it's very interesting and enlightening, tho also suggest working up to it. The one I'm most familiar with is Karmê Chöling in northern Vermont [0], and there are others. Even the short retreats yield wonderful states of mind. Check it out!
[0] https://www.karmecholing.org/
[0] https://www.karmecholing.org/