Yeah - except for the playing music and networking part. I agree that many Universities that offer music degrees probably won't make much of a difference if the student isn't doing everything they can outside of class.

There's a lot of stuff you can read online, but unless you have a clear goal to apply that knowledge too, it's going to be hard to focus and build a plan. Since it sounds like you are interested in performing, engineering, production, but may not have a lot of experience outside of your own projects, I would seek out local music meet-up groups to network. Get involved with as many projects as possible. Find a mentor. Continue taking lessons, and if you aren't into going to college full time, at least work on your general ed courses so you have the option.

I've yet to hear of someone going to get a fall-back degree at the same time as pursuing music actively. If you're ready to get serious about it, do everything you can to help yourself.

Don't short change yourself. Do EVERYTHING. Don't rely on anything panning out. Stay enthusiastic, and surround yourself with the people who are successfully doing what you want to do. The internet won't make you a better player, teachers, other musicians, and life experience will.