again to 20/4 will it continue flowering?

just got my marijuana plants into flowering ..abt 1 week ..for the veg stage my light period was 20/4 and for flowering i changed it to 12/12, now..since it is flowering...i was thinkin if i change it back it 20/4 will it stop flowering or will it continue to flower???

It will stop n revert back to veg unless its an auto...if u ask simple questions like this u should probably be reading more and not growing

And why would you want to do this?

LOL, really...? To answer your question it will put your plant back into veg. 12/12 until harvest is what you need unless for some odd reason you'd like to stop flowering?