Hello! Below is a post I put in a different thread, but it's appropriate here as well. Feel free to let me know if you have any questions!
"Welcome to growing and even better: learning!
Generally the flowering stage for a photoperiod (I'm assuming that's what you have but if you have autos, timeframes are different) lasts 8-12 weeks with most finishing in 8-10 weeks. That's at LEAST 56-70 days in the flowering stage. There are a few ways to know when your harvest window opens:
1) Time in flower stage. This is generally given by the breeder, but you can use the rule of thumb of 8-10 weeks. This method gives you a general idea of when you can plan to harvest. (At 45 days, you're significantly NOT in the harvest window yet)
2) Pistils start to turn amber/orange/brown and curl in on themselves and no new ones are growing. You still have lots of white pistils indicating you're not yet in the harvest window.
3) Trichomes turn milky then some amber. Trichomes, NOT pistils...the photos you posted aren't close enough to show the trichomes (you need a magnifying glass, jeweler's loupe, etc to see them) but looking at everything else, my guess is that you'll see they're pretty much all clear, maybe with a few turning milky.
4) The overall health of the plant. This means that the fan leaves will start turning yellow or brownish or redish or purplish sometimes, the plant will drink less water, and the buds will have stopped swelling. Note that these things will happen naturally, NOT because you stopped feeding them.
So, all that said, I think you have at least 2-3 more weeks from when you first posted if not even a little longer.
Keep us posted with what you decide and when you decide to harvest! Looks like it will be bountiful when you do!"​