Dadio has that....
To make any type of suggestion. I would need to know what you use, how you use it and what's the water you use? Any supplements in that?
Soil or hydro?
Pictures say a thousand words!
Increasing THC is simply dependent on the strain your growing and how well your doing at reaching the plants potential.
I might finish the way your going and then start to make adjustments on your next grow!
Jumping in with both feet is ok, you just don't need lead shoe's when treading water in a sea of sharks.
Grow them out and see how it is.