Day 3 of 12/12 .. Can i switch back to veg?

I switched to the 12 12 cycle 3 days ago and now I'm thinking I want to put it back into veg the plants are only about a foot tall. (2 plants )
(Indica domanant) 9 pound hammer. growing in a mix of Coco and perlite in a 24×48×60 grow tent with a 600w LED bloomspect 600 feeding it Fox Farm Trio and my lights are about 16 in away from the top my question is can I switch it back into vegetation? I think I want to grow another eight to ten inchs before flower

They’re going to double or triple in size. So kee they in mind

How have the plants reacted to the 3 days? I’ve had some that really growth spurt and would probably mess things up if switching back. But revegging is possible, I’ve done it after harvest plenty of times

Sure, switch them back. They may or may not revert back to veg without issue. Just be aware that the chances of issues or hermes multiplies in likelihood if you do so.