It’s tough to say without pics of entire buds and, preferably, one of the entire plant.
When u say day 60 of flower, do u mean that it’s been 60 days since u flipped the cycle to 12/12….or 60 days since u first started seeing flower production???
There can often be quite a difference between “flip day” and “first sign of flower” day.
The plant I’m growing currently started popping pistils almost immediately after I flipped the cycle. But the previous grow was very different.
I was growing 3 diff strains and one of them didn’t show any evidence of flowering for over 2 weeks. I guess it’s based on a variety of factors such as maturity of the plant and genetics.
Anyway, if you are still seeing white pistils, no amber trichs, and the plant is healthy and not rapidly heading south, I would give it more time.
For the record, I don’t really look at trichs until the buds look ripe to the eye….meaning almost no white pistils, calyces have swollen, and most all pistils have receded back.
Breeder timelines are notoriously inaccurate and a plant will finish on its own time frame based on the environment.
Give it a week and evaluate from there. It’s very uncommon for a grower to let a plant go too long and far too common to harvest before it’s reached its true potential.