Help: with lighting mistake

Have a friend who is growing(Satori and Hashberry). Plants look healthy and good..10-12" tall. Sprouted 5 weeks ago. Just discovered that he has been using a 12/12 light cycle instead of 16/8. How should this problem be corrected? Should he simply switch to 16/8? or continue on the 12/12 and see it through? Any suggestions would be greatly appreciated.

Put them on a 18/6 or even a 24 hr cycle, Ive heard that plants can even go back to vegging from flowering but you'll have to look more into that

ive heard of people using 12/12 the whole grow but ive never tried it.

Thanks for your responses. Does anyone know if this change in light "shocks/stunt" plant growth?

olympia said:

Thanks for your responses. Does anyone know if this change in light "shocks/stunt" plant growth?

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honestly, i don't know but my guess would be the 12/12 is shocking and stunting to the plant right now.

switch over to a 24 hour light period. Plants can be switched from Veg to flower and vice versa. I just read about this in one of my books, The Marijuana Growers Bible, or Marijuana New School Growers Guide. It will take a lot longer to be ready to flower but it is possible according to the book

Uhm, switching to 24/0 or whatever light after inducing flowering might induce hermies... I would just keep it on 12/12 and get some low yields.

If you're worried about shocking the plants then adjust the light cycle gradually to 16/8. Switching cycles is easy. I have actually put my plants into a flowering cycle and waited for flowers. Once they began flowering I could pick out the males and replace them with females from a different room thus maximizing efficiency.
Switched back to veg cycle for 6-7 more weeks and back to flowering for good. Its a long boring process but its possible.