There's no advantage to taking a top for a clone; so don't top your plant unless you would otherwise do so. Lower branches actually tend to root a little faster.

Part of growing is knowing your plants. There is no set-in-stone rule about how old the mother needs to be before you can take a clone from her. You should be able to look at your plant and see "okay, she has some branches I can trim." I'm trying to be helpful here, not be a smart ass. If this explanation is too vague, post photos of your plant when you think it is ready to cut, or close to ready, and you'll get all the help you need. :thumbsup:

PC :smokin: