[aksss]

This is quantifiable.

Ideally start when you’re only in the “pre-diabetic” range: fasting glucose above ~105ish, A1C > 5.7.

Those are the numbers you’re trying to lower. So how long you go with a dietary change depends on how well you’re able to manage this numbers down, and keep them down.

Surely some of this depends on how rigorously you can decrease your sugar intake, fasting or not, and/or restore better function of your systems (e.g. exercise, fasting).