These are general "guidelines" vs bro science; I am unsure of weight, but do understand some folks use wet weight as a guide on when to process and cure flowers. Some use a wood moisture meter to measure the moisture content in the stem/bud; something I am interested in learning more about as it seems a more exact way to measure mositure.
Another guideline you may find helpful is the (% of RH x 10) + 1 = days to dry. (60% RH + 1 = 7 days to dry) Again, it is a guideline and depending if you whole hang vs branches vs huge plant, alot of different factors to determine the lenght of time required to dry.
I am no expert and messed up my last drying session. This resulted in likely loosing the harvest of one plant, now I would lean toward processing and curing early, as you can always burp more fequently, leave the lids open longer, use paper bags etc to reduce some excess mositure, but once the flowers get too dried not sure they are salavagable. I did use the 62% boost packs which likely rescued my harvest.
Crying and curing seems more "art" then "science", hopefully we can dial in better as we gain experience. Best of luck to you!