Purple Kush, 3 months old, these plants are all fat as tall.
When they yellow, almost fall off with a nudge. All nice big green leaves are energy harnesses. Just the dead dying leaves. Just my experience. I am not an official Marijuana Doctor, I just play one.
Unless your worried about humidity control , I would not remove anything that’s still green…
We only do that indoors to get the best light penetration when using lights and not the sun…
Might thin out the bottom section to allow more light and air flow.
I thin at the bottom for airflow and to reduce powdery mildew stress. I also am stripping away popcorn buds as a light lollipop methodology just to make harvest less painful. But I agree with the above - keep as much as you can without endangering the plant to harness as much sun as possible.