Hi Oliver!
First off, Go Hokies! Congratulations on your acceptance to Virginia Tech! My grandfather was a Hokie, and I *strongly* considered their ROTC program for military service, but ultimately chose a different military path.
"Where do I start?" is a common question, and a frequent response in permaculture circles is "At your doorstep."
And one of (permaculture co-founder) David Holmgren's 12 permaculture principles is to use "small and slow solutions".
So with those two things in mind, have you considered possibilities local to VA Tech? They are an absolute powerhouse in the agriculture education world. And permaculture of course originated as a portmanteau of "permanent agriculture".
So maybe a "major" change in the academic sense would help, rather than a "major change" in the life-choices sense? Perhaps some faculty (or your academic advisor) can give you guidance and point you towards hands-on extra curricular opportunities that align with your values.
More specifically, check out VA Tech's "College of Agriculture and Life Sciences". They have several permaculture compatible schools:
https://www.vt.edu/content/vt_edu/en/tags.html/vt_edu:academics/colleges/college-of-agriculture-and-life-sciences
Tech even has an agroforestry team...way cool!
https://agroforestry.frec.vt.edu/
They may be at the grad school level, but I see they have a link to a sustainability center, and even a forest farming YouTube channel. Surely a good sign!
https://youtube.com/@exforestfarming?feature=shared
Maybe cold call some of their faculty, and bring up "permaculture". I bet they'd resonate with your values and speak your language. (I actually used to be a freshman academic advisor once upon a time -- faculty really do care about your success and well-being, and are generally *very* passionate about their areas of expertise. They'd love to support you, and they want you to succeed!)
Outside of academics, maybe next fall on the weekends between classes you could attend Shenandoah Permaculture Institute's Fall PDC, and meet some local permies and Virginia farmers. I recall they have a scholarship -- perhaps you could apply for a free PDC?
All this to say, you're in a good place, Oliver. And as a runner, you know how to "go the distance". So don't give up! See you around the forums.
P.s. You mentioned LEF. I bet if you are in the area this November, you could be invited to attend their 14th annual "Land Day" party...I hear there's solar-powered dance parties!