Hey, I am with the other on this.
I WOULD NOT be pruning anything on the lower half of the plant. despite it not getting buds as big as they could be its still such a small space and light hitting the grow tent floor without anything there is even more wasteful.
next grow practice some LST and filling out your canopy "SCROG/SOG" as a dense as you can get it then strip away the lower growth that legit will not get any light but shade from the upper leaves.
Best Of Luck!
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