do you have access to more of these? if so, id say just let these ones grow out the way they are and buy some more clones and put those under 18 hours of light per day. theyre so far along now that to revert them back to vegetative growth would be very time consuming and you would be better off starting over. if you dont have access to any clones i would say to take those and put them under a fluorescent for 24/0 lighting. oh, and force flowering means nothing more than just placing them into a 12 hour lighting environment, you dont actually force anything. cheers