It works but it only improves your vision. NOT your actual myopia.
Keep in mind: Only because you can see better, does NOT mean you reduced your myopia (axial length). You are teaching your visual cortex how to clear up blur. Over time you become really good at it. You can drop some diopters but the whole "reverse" myopia stuff is BS. sorry. Simply look at a street lantern far far away at night and check the bokeh size. It stays the same which automaticly and UNDOUBTLY means the refractive state of the eye did NOT change! Test it yourself if you feel like you made progress. You can see better but your myopia is the same or it even got worse. Jake uses studies about emmetropization as evidence, which obviously works great but if you dig deeper you will understand that there is a problem with this mechanism in myopic people.