Pineapple Chunk - Days flowering?

I use a 4x6 tent. I switched to LED's about 6 years ago. I am rarely on this site. Therefore, I am not up to speed on what growers are using but I bet there are still die hard HID growers out there? Anyway, my pineapple chunk is difficult to determine when it should be chopped. Barny's claim 56 days. There are people who claim as many as 70 days for this strain. I think mine could possibly be starting to flower while still in veg tent. Mine have amber trichs starting around day 50 or so. However the buds still have a lot of white hairs. Breeder claims up to 25% tHC. I have chopped early and late but haven't witnessed anything close to 25% tHC. I have never went above 63 days. Is that my problem? Am I just too impatient? Does it need the 70 days?