I would not be defoliating your plant, its still small and the canopy is just right.
One rule of thumb for the future is to only remove the bigger fan leaves leaves that are blocking other sites below from getting light. This combined with trying to keep the tent floor in shade and no direct light beams hitting the ground are good things to keep in mind when thinking about removing leaves.
Also the plant uses the leaves to make energy and grow so its not the best thing to remove any of them when not needed.
Best Of Luck!
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