Pinch and bend low stress training

How long does it take for a plant to develop knots where i pinch and bend?

I find that they will usually form a knuckle after a few days.

Not long
less than a week they start to heal
But often times I use break and bend and tape , it gets direct results and in a dialed in grow it is safe (as long as the cambium is intact)
Mostly when running lanky plants