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by tfha 2724 days ago
Can corroborate. I managed to take my vision from -2.75 to -2.25 over the course of about 9 months of what I would consider to be considerable effort.

Notably, after about 9 months I stopped putting in as much effort though I continued using under-powered lenses. My vision today is -3 (about 5 years after I got it down to -2.25)