The writer reports reducing from -7.25 in one eye and -7.50 in the other to -4.50 and -5.00. They say they have not done much specific work beyond better screen habits and avoiding wearing their glasses unless absolutely necessary.

See more documented cases in the EndMyopia Case Report Registry.
More: Are There Verified Case Reports Of Myopia Improvement Without Surgery?, Can High Myopia Be Reversed? What The Documented Cases Show Above -6.00.