If you want to speed run things and you have a little money to spend, I'd check out Dave Beazley's workshops, particularly his Advanced Python Mastery course[1].

One advantage you have over senior developers is that senior developers need to be generalists, you have the opportunity to go deep. It is entirely conceivable you could learn Postgres, JavaScript, or Python better than someone who has been programming in those languages daily for over a decade simply because they have a lot of other things to worry about. They can't read the manual cover to cover, no time. You can. Being a deep specialist in a technology has a lot of value.

If you find a programming community you love, start going to conferences as soon as possible. There are often financial opportunities available for new developers.

This is not going to happen overnight. In most cases to get proficient you can expect that working 3 hours a day, 3 days per week, it will take you about 3 years to reach a point where you might be employable -- although you will probably find you need to put in more time than that. But you can reach a point where it is enjoyable before then.

Good luck.

[1]: https://dabeaz.com/advprog.html