Where you have already applied LST, stop cutting. it's already growing sideways.
For the others, try both practices and then compare which one gives you better results. once topping, the other fiming. Cut after the 3 node for topping; cut the 4th node for fiming. Fiming failed for me (see my diary), so I only use topping. It's safer and works every time so far.
LST can be done at any time, Its usually best to start when the new growth is blocking the lower growth between the main stem and the fan leaf. As for topping most say to wait until you hit your 4th node. But as long as she has some nice big fan leaves to gather energy you wont be hindering her that much.
But with an auto I would recommend only LST. Topping can slow her down to much and hinder your yield.
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