blocking

Hi my 6 strawberry haze plants are already quite branchy but nodes aren't far from anotger. The fan leaves a so big their blocking everything can I them as I'm bout to change the lighting to 12/12 soon ...... ??????:

Before strand that I have growing our white widow x, G 13, great gum, and Dr. Krippling. With two auto flowering sitting on the side I'm using two 300 W LED light my question is when is the earliest that I can cut off some of these water fleas that are blocking the prongs from receiving light...