You’re awesome dude! I’m going to flip the lights in 4 days when they are 60 days old.I dont see the signs either. And yes, the flowering process does begin after you turn to 12/12. Sorry if I digressed from your original question a bit..
What I was referencing, was the pre-flower signs of sex that present themselves usually around 4-8weeks of age. You can put your plants into 12/12 whenever you want though, which should have been my main point originally.
The plant needs to be a minimum age before its able to show signs of sexual maturity... Your able to manipulate that via the light schedule, but the plant still needs to reach a certain age (2 day old seedlings cant flower, regardless of the light cycle), and still needs the transition time of a week or so after 12/12 to become sexually mature and begin to actually flower
TL;DR - Flip to 12/12 when your ready. You can wait until your plant tells you it's ready, or you can manipulate the light schedule to force it to be ready. Either way, you know it's in flower/ready to flower/flowering when you see the plant present signs of sex (calyx/pistols or pollen sacks)
I understand each stage and should have been more clear. I used feminized seeds so I’m hoping for female plants lol