When to chop my plant down

In about 3 week roughly

Would wait for another few weeks. Best you check the trichomes on the buds. if they look milky and golden, you plant is ready for harvest (: 💚🌱 good luck and sweet smokes

Once there are 98-99% brown pistils, you will be entering the harvest zone, so still about another 3 weeks, give or take. 70-80% brown pistils is way too early.

Hard to tell by the pictures, you need to look at the trichomes. you want milky white trichomes. if they are clear the plant is not ready. and if most of the trichome are amber,it is going to be some very sleepy bud. best time to harvest you are going to have a mixture of colors,but mostly milky white. Pistols changing color can be an indication,but not always. But if they are just starting to change its unlikely its quite ready yet, but nearing ripening. but I have been finding that my seed packets have been fairly accurate at telling me when the plant is ready. most of my India-dominant stuff has been finishing perfectly at 8 weeks. my hyprids seems to be between anywhere from 8-10 weeks. My sativa took 14-16 weeks

When the pistils 70-80% is going to nice brown you can cut down the buds🏼