The LED light is killin' me. The lights might be fine, though, because the nugs at the bottom look about as good as the ones at the top. Maybe light isn't the issue? I know the post asked about trimming. In this case I'd suggest you don't chop the bottom nugs because your canopy is so sparse that the bottom nugs are still getting light. Normally you cut them off early into 12-12 assuming they will get no light but use up nutes and decrease airflow, but in this case you don't have to worry about that.
That said they don't look very big... would you be open to going over your grow technique for this run?