Hi, Personally looking at the girls I think they have a lot more to give yet, have you checked the trichomes? What stage are they at? Clear, cloudy, amber? This is your 'best' measurement for harvest, if you want a energetic head high and max THC potency go for all cloudy no clear, more body effect go for some amber and cloudy, like say 15-20% amber to cloudy, this is down to personal preference. If your looking at a "breeders" recommendation for time scales, don't this should be used as a guide! Start checking trichomes when your 7 days before the breeders stated timeframe and see where they are at. Every individual grower/space/optimization is unique for each individual grower and what could take 60 days for the breeder, could take 90+ days for the grower and their unique environment. Keep an eye on the trichomes but check the trichomes on the buds not the leaves!! Hope this helps, happy growing 👍