I'm gonna take a backseat on this one, I have never taken a clone from a flowering plant. The only thing I could say is don't take too many if you still want to get any bud from that plant.
Russor is so Correct. I took one clone from my flowering plant. The flowering plant slow down, and right now the clone looks healthy, BUT after 12 days is not showing any sign of a root coming out of the rapid rooter. I will never take a clone from a Flowering plant again.. Weeeelll. I will try not to...lol