Definitely has some time left being hardly if any pistils have receded back into bud. It's not the main factor for when to harvest but I've never seen bud done with pistils standing that straight up.
Just leave em all. If the herm released viable pollen hopefully it only partially pollinated your girls. You should be able to look and feel for seeds, if you don't see many you are fine. Seeded bud is just as potent as sinsemilla, you just lose yield and being it's too late in flower to remove it keep it in until finished.
You really just need a $10 microscope, 30-100x. All you generally want is mostly cloudy glands with a spec of ambers and as little clears as possible.
With most strains especially under less favorable conditions(in your case weaker lighting and bonsai plants) many can go well over recommended flower times.