Nice looking lady there bruh (my apologies if i offended you by complimenting your woman!)!
On a more serious note, ive had autos harvested at day 70 and others on day 110 so the only way to really tell is by looking at the trichomes and other visual signs she sends. By the looks of yours, if i had to guess id say maybe 10-15 more days. But then again its all about how you like your flowers.
For me, indica or indica dominant strain, i will probably chop when all trichs milky and little or no amber ideally (quite tricky to achieve, guess that is strain dependant).
Sativa or sativa dominant strains, i tend to watch out for about 10-15% amber.
Thats just personal preference.
Just know that as you go higher in the number of the amber trichs, the less psychoactive it becomes. You'd feel more body stoned than head high if that makes sense!
Did i say your lady looks great already? :-)