Topping at last two weeks!!

Hey! That is false! The only thing topping will do at this stage is stress your plant. She'll spend her energy repairing herself and not fattening those buds. Don't top your plant, just take care of her.. High THC production happens in the trichomes, to increase that you'll need to add more P K nutrients. Your ladies are looking great. Pistils are starting to turn brown. Those trichomes are starting to get cloudy which is a great sign. Harvest window opens when you start getting amber pistils. Clear trichomes haven't reached their full potency, cloudy ones are full of THC and amber are losing THC while gaining CBN. So depending on your preference whether you want more of a head high or body high, you want to look for cloudy or amber trichs. I normally start to look at trichomes when there are about 50/50% white and amber pistils. I harvest when after examining and finding 70% cloudy trichomes and 30% amber trichomes. For me that's a perfect combination, depending on the strain as well. With some strains I go with lower amount of amber trichomes but always atleast 10%. As for what they look like, clear trichomes look like glass, cloudy like plastic and amber are easy to spot, looks like resin. Good luck and happy Growing!