The answer is that you are at 8 weeks from flipping to 12/12 AND you’re at 6 weeks from the first sign of flowering. Many different variables figure into the length of time a plant takes to get from point A to point B.
Some strains take longer than others in general because of their genetic profile. But the growing conditions impact how fast (or slow) the plant will progress through the flowering cycle.
Those very same conditions affect trichome development as well. Many growers, myself included, have waited on milky trichomes to turn amber and watch day after day as it does not happen. Often in the meantime, clusters of trichs become degraded and the overall terp profile lessens.
Watch the plant not the calendar. Once the buds have went through their noticeable swell, almost all white pistils have turned and receded, and the aroma is at a peak, you’re in a good window. The trichs will be whatever they are and that’s what you’ve got…..no better, no worse.
