My girls regularly go two days between watering late in flower.
It is hard to judge when it's done with foxtails but when all the white pistils have turned color and receded on the "normal" parts of the buds I start to scope the trichomes. I look for at least all white, no clear, some amber doesn't hurt
Pots are 7 gal, in soil. This plant got hungry and it was hard to reverse entirely. I agree! Right now trichs are all milky but no amber so I’m willing to give it a bit more time.