Looking good in there, but I don't believe that doing LST on the two lowest nodes will increase your yields.
LST on an uptopped plant involves slowly bending it over so the top is lower than the rest of the nodes, causing the plant to put growth hormones into the lower nodes to get a new apical branch. On a topped plant it would involve keeping the top nodes flat (again tricking the plant into moving the auxins to lower branches) while the lower nodes catch up.
I did a write-up on it here on the type without topping if you wanted to take a look:
Greetings all! I've had members ask about how I do my LST (low stress training) on my plants so I thought I would do a pictorial on it. My pics are of two different plants but don't let that confuse you. It's just easier to demonstrate that way.
Let's discuss the theory behind LST for a minute. Cannabis plants grow up to the sun. They have a top (apical) cola and side branching. Most of the growth hormones (auxins) go to that apical cola, which is why an untrained plant often has a beautiful huge bud on top and then progressively smaller buds as you head toward the soil. Topping a...
[whoa, they totally changed the look of onsite links!
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The topping and training method is the type I use on all of my photoperiod plants now.