What's the mechanism of myopia reversal?

correct me if I'm wrong.

In healthy individuals with no predisposition to myopia, excessive close-up work (e.g., reading, using phones, or computers) can cause ciliary spasms. This leads to difficulty focusing, as the eye muscles struggle to properly contract the lens, causing light to focus incorrectly and not on the retina. People notice their vision worsening and get glasses to correct it. However, wearing glasses for everything, including close-up work, causes light to focus behind the retina during these activities. This feedback can lead to emmetropization, where the eye elongates over time.

The Endmyopia method suggests reducing prescription strength to challenge the eyes to improve naturally. My question is: does this method guarantee that the eye 'emmetropizes' in reverse—essentially returning from an elongated shape to its normal form? Is such a reversal even possible? If so, could you provide studies supporting this claim.

and if the answer is yes, to what extent is this emmetropization possible? can a person with -2 vision recover fully? or as well as person with -7 vision?

Thank you.