I've looked into all the methods that claim that myopia can be reversed and thanks to quitting my job and taking some time to actually put these things into practice I have sifted out what works, what's important and what's hogwash.
I can at the very minimum guarantee you a low-effort way to not get worse.
Getting better require much more effort because you have to regain better habits, there's no magic exercise that will fix you, you have to keep up the habits 24/7 until you do them subconsciously, as you actually did before a sedentary life of watching screen killed them.
Think of it like meditation. Meditation is very simple, you just have to stop your incessant stream of consciousness. But, it's not that easy to actually put into practice. This is the same.

Now, I've only been making consistent progress since a week ago, even though I had been trying for years with up and downs, that because I was missing a vital piece that I only understood recently.
I can't throw tall tales of getting rid of glasses and shit but I can help you guys keep good vision even after an evening of close up work.

I can recommend the following resources:
endmyopia.org (Jake Steiner is a fucking ass, but there's some good information)
Mark Warren's method (superior method for active focusing)

In short most of your eyesight problems are due to:
1) Ciliary spasm (cause of pseudomyopia)
2) Static tunnel vision (bad habits)
3) Using full prescription for near work (this is what makes it get worse)

I'm preparing a a few summarized topics for you guys.
In the meanwhile ask me anything.