Trichomes are Good to go by and all, but top parts of the plant can show more done than the top pal. All plants need at least or around 40-65 days of flowering. There is only 3 weeks of stigma. Those buds might be showing they are looking done but there is still lots more mass for it to put on and lots more sites to develop its still early. You have to be careful when going of trichomes, are you seeing all that over your plant, and even if so, it still has so much flowering time left you'd be mad to chop her.
@Mr_Weeds_Auto look at stigma, it's only in it infancy coming into mid flower at best. Good luck.