I have read several reports on Chem Dog sometimes going past 12 weeks. The last grow I did I grew a monster CD indoors DWC under mixed lighting totaling about 900 watts. She was still making white hairs and I never saw an amber trike.. with this pheno type you need to really look at the trikes with a loupe. The thing you look for is the stem of the trikes start to curl or lean over rather than being firm an erect. I harvested mine close to 13 weeks of flower, she was nearly 7 ft. tall and yard long colas. GOT NEARLY 12 OZ DRY FROM 1 PLANT.
The weed is incredible, I've had several veteran smokers get sick after a small doobie between 3 or 4. It's gotten me very dizzy more than once and that's not easy to do. The only other weed to hit me nearly that hard would be some very good White Rhino and also some AK47.
So, don't look for amber trikes and red hairs replacing white hairs on the Chem Dog because you'll likely not find what you're looking for. The secret is in the trike stems starting to get a curve to it rather than sticking straight out. Sounds crazy but I've experienced it of my seeded Chem Dog as well as a few clones from her.