Are you waiting to see amber trichs because you want a more couchlock kind of high? If so, wait until the trichs are where you want them to be. There is no set time as far as when a plant is supposed to be done, only estimates. I had plants that were supposed to be done in 8 weeks, and took 9-1/2 to finish. I've had plants that were supposed to take 10-11 weeks that were done in 9. It's up to the plant and the conditions it's grown in. Remember this; THEY'RE FEMALES, they have a mind of their own, and no one is gonna rush them or tell them when they're ready. LOL! Just be patient and keep looking thru your scope. When they're where you want em', chop em'. Best of luck the rest of the way.