24 hr to 18-6 lighting on scrog

Hi, im currently on 24 hour lighting 1x600 1x400, doing a 6ftx4ft scrog 4x ppp 2 blue cheese from clones, i had let them get a bit to big before my screen went up, but ive got the screen down at about 11-12 inch from pot, i know theres lots of discussions on 24 hr lighting, what im thinking is as the screen is a new stress to them is it worth cutting back to 18/6, for them to rest a bit or indeed if i can now cut back as they have allways been on 24 hour, also would that then cause more growth, has any one any ideas on this,
thanks

can anyone shed some light!! i might be missing something obvious, or in the wrong room?? if thats the case please dont hold back, i can take some slander!!
cheers

i only run my lights for 24/0 for first week after out of humidity dome. then switch 18/6 till flower. like people plants need to rest. if i can remember correctly the lights off help rots grow also.

thanks for info, do you know if i could now switch to 18/6 for tha last couple of weeks veg?