I move my screen back and don't wear glasses during work. I also have an eye chart hanging in front of me across the room. I stuck to near-far focus exercises for about 6 months at some point. My eyesight has not improved. I do notice completely different ability to read the chart during the day - sometimes I can read letters 5x smaller than the large letters, and sometimes I can barely read the large letters. Sunlight and how tired I am matter a lot - early in the day on 8+ hours of sleep like today means I can see almost as well as 20/20 (but at night I can't read the large numbers, though I can read the small with glasses). Sometimes doing the near-far focus exercises helps for the short term. Breathing deeply seems to help. I seem to have a ton of stress related issues breathing deeply helps relax.
Unfortunately, the tldr is that my vision has not objectively improved permanently.
Story of my life really - I very much question most people's ability to improve in most areas, but that's a different topic.
P.S. I have the same disbalance as most here - one eye is both faster to focus and sees better. I close one eye when I do near-far focus.
Anecdotally people have reported you can improve at about 0.75 diopters per year and that resonates with my experiences.
Also anecdotally, people who spend a lot of times outdoors seem to recover faster.