I need to top Lillian Stoffregen as she has grown a bit to tall (6') for the spot I have her planted. Last year I just cut the plant back and it came back fast. This year I will air layer them, but I am questioning the size of the air layer. The first one I did yesterday the AL is 17" in height with branches. Is that to large? I have four more to do most will have four branches and will be about the same size.