There’s going to be a few years building up the knowledge and client base.
Once that’s done, you’re in.
I’ve been following this guy for a little over a year (I think) and I went from “i can do this” to “let’s try it on the weekends” and now I have a serious decision to make regarding quitting my 9-5. It all happened in about 8 months
A bit ahead of the curve there, but certainly doable.
There are tons of YouTube videos to get you going: and it’s not too expensive to start out. The critical part is time, the ability to learn (from both new material and mistakes!), and decent customer-facing skills.