Ok. I'll try that. I'm growing outdoor on my balcony.
12/12 will do it.....BUT
Umm...hope there's not a big security/patio light near you.....
You also want some light proof curtains to that balcony as we humans tend to light up the night.
My question is how did it accidentally re veg? As you might want to avoid that situation if you can identify it.
One last note that I didn't even hear come up. Flower now? On a balcony? Hmmm.
Is there something I'm not getting here? I think it's a little late to start flower outdoors. Here in the states, and the U.K.. so is there more to this story? You do you by all means, but I'm willing to learn if there's something I'm missing here. But I don't want to set u up for failure either, you came here for help.
Good luck with your grow!