No worries, the leaf will continue to grow or drop off and be replaced by 100 or so

The tops and how many will depend on the cut/strain, sometimes 2, sometimes 4. Beauty is, it won't hurt the plant, you may have to try a few different methods/cuts to get consistency, in the meantime you'll get improvements in growth just from the process. All training, whether it took "perfectly" (if there is such a thing) or not is beneficial to generating new/vigorous growth.