This interveinal chlorosis is the start of a magnesium deficiency. 1 tsp of Epsom salt (magnesium sulfate) per gallon of water will correct your issue.

Perfect environment and nutrition. Equal amount of light, canopy and roots. People love blasting light. People love a wide, thick canopy. People seem to hate roots though. They’re almost always neglected because you can’t see them. Limit root mass, limit yield.

Removing lower growth will not stunt the plant but make the tops grow faster. To slow overall growth of a plant is to allow all the undergrowth to exist until you want the plant to take off by removing it all.

I would remove any growth about 2 feet above the soil so you have some airflow at the bottom. Depending on how wide the side branching is, you may want to remove some of the inside growth on the lower branches not getting good light. Remove anything not getting good light.