At least 4, maybe 6 weeks.
Very generally speaking: i always just slate "10 weeks" for flower, give or take. But 10wks from flip is when I put a "harvest?" note on my calendar. Most plants need more, very few will need less. Also, I'm just growing my own homegrown & am notorious for pulling plants early to "keep things moving", you need to decide for yourself what "ripe" looks feels and smells like to you.
But still, generally, almost everything you're gona fuck with is right about 10wks at least as a point of checking ripeness