26 days in 12/12 from seed force flower

Hey everybody! I'm looking for an advuce on how to force my 26 days old Jack Herer to flower. She's been going 12/12 from seed and last two days I switched it to 13hours of darkness. Next time I water I'll begin giving her BioBloom.

I also think to try and water her with a bit colder water, to simulate autumn rain.
Is there anything else I can maybe do? Read somewhere a suggestion to give her 24 hours of darkness maybe?

It is feminised Jack Herer, grown from seed.
Also it is faily hot in my area.

Thanks!

you can go straight to 12/12 but i usually gradually reduce mine in an attempt to simulate the gradual change outdoors.have you transplanted recently ,or have you started using nutes yet?also the cold water thing would just shock them in a non productive way at this size

Bag the cold water. It's a waste of time. Just stay at 12/12 and they will turn. Don't use bloom nutes! Use reduced feedings of veg nutes well into the 3rd week of actual flowering.

They will flower it just takes longer straight from 12/12. next time veg for a week or so and it will pop into flower quicker. At least that has been my experience with the side by side tests ive done.

I always use cold water. it holds more o2 and it matches the temps of rain water better which is on average in the 50's i believe.