m0useanswered grow question 6 months ago Go by bud density, rate or growth, pistil dry back and trichome colourization.
Also doe snot hurt to factor in how much its drinking.
If its got density in the buds and its not growing much and drinking less water in combination with good amount of pistil dry back and amber trichomes its likely ready.
Some strains don't get dense buds, other pistils don't dry back a lot and some won't amber up or amber way earlier. so its a process of multiple things to factor if its ready. and like others have said, measure the trichomes on the buds vs the sugar leaves.
Good Luck!