The longer the better, but you could essentially flower it straight after toping it. I would wait about 2 weeks, but I don't know how big you want your plant.
Your plant will not grow much in height in flowering after you top it so u need to get it to the height u want then start flower.
Thanks for the info. I am about 6 days into flower, and i have some white hairs showing up in several spots. Some where there as early as 2 days in though, crazy. She was ready to go!
you could flower it right away if the place where you cut it from has 2 nice flowers on it - but really more like no less then 1 week and up to 1 month because anything past that and you might want to top it again since it grew so much
Can I lst and top my plant after it’s this big almost 80 veg day (thought it was an auto turned out not ) so I’m going to switch 12/12 tonight there already 45 inches I can’t have them get potentially 90” should I snap the middle of the branch by bending it and tie it down or will it not stretch as much