MacLimboanswered grow question 4 years ago As soon as you can see she's starting nice, healthy growth after re-potting you can start your LST.
I started all my LST quite early, just to try, on all my strains.
On one of them, NYC CBD Auto ( Pyramid Seeds, no diary ) the stems are really sturdy.
Sort of: break first, crack later. I found out the hard way.
My tip which I learned here is: wiggle the stem or branch a little between your fingers carefully.
To soften it up, before trying LST. That what is soft can't break or snap.