My point is that there is not enough information supplied by the OP for anyone to make a logical deduction.
I have two plants about 4 weeks into flowering.They're
both dropping their fan leaves from the bottom up.Every plant I've grown has followed this same pattern.
So you haven't had beautiful green plants right up to two weeks before harvest? I have and that's what I prefer based on experience.
Hypothetically speaking, JoeSchmoe knows that sticking a nail through a plants stem 2 weeks before harvest makes it flower faster and stickier. He knows this because this is how he does it every single time. How valuable is his knowledge given his limited experience? What does he have to compare it to, to substantiate his claims?
I'm not trying to give you a hard time but I hope you get my point.
There is a debate that often pops up about how much yellowing and leaf dropping is "good" for a plant nearing the end of the flowering cycle. For the answer I often look to what happens in nature. My outdoor grows rarely show these signs of stress and 75% of my grow is 12+ week sativas. This doesn't occur in my indoor projects either, at least not since I was 17 and working my first noob grow. I think there is too much emphasis put on boosting P & K to ridiculous levels while cutting out N way too early. I used to do this also but now have found a method that works better for me.
...and that's my stoney rant for the night.
peace.