You can take the cutting if you want to propagate it. I would personally leave them at this time and let the tree grow at this point. You can do air layering later in summer.

Bass

Yes, air layering is a much better option for propagation.

Basically, you take a plastic soda bottle, cut it in half, and place it over a branch. Fill it with dirt while its on the tree, and the branch will start to root like it was a cutting while still being attached to the tree. That way, you never get a dead cutting, as they either don't root (and no harm done), or they do root and you can then easily cut it off below the soda bottle and have a rooted tree ready to go right from the start.