Thought of the words of wisdom for gym / lifting weights:
You don’t get stronger while you work out, you get stronger while you rest.
Something like this is also true for improving vision. You note the improvement in centimeter / eye chart / distant landmark as your eye is adapting to the increased challenge, when the reduction is still new.
But the actual sustained improvement happens after, when that improvement appears consistent.
Leave 3-4 months between diopter reductions, even (and especially if) things seem improved and consistent even after a much shorter time span.
Jake Steiner has been an evidence based myopia control scientist and expert on myopia reversal until his retirement (in 2025). He has spent 20 years in myopia science research. His teachings on nearsightedness, including prevention and reversal have been cited in thousands of articles discussing human eyesight.
Find Jake on Twitter, check out his videos on the endmyopia Youtubes, or read more of his over 1,200 articles in the blog.