I beg to differ. When I saw the pictures, it appears that there are so many leaves on top that the roots can not supply if you cut the pupfrom the mother plant. If I were you I would cut all the leaves in half to keep it steady straight and looking nice. In no time at all once the roots are established new shoots will come up nice and pretty.
When I transferred 3 of my super dwarf cav 2 weeks ago, most of the leaves turned brown and withered because of the shock and insufficient roots to supply the leaves with water and nutrients. Yesterday I cut all the leaves in half and here's how they look now.
But there are many ways to kill a cat. Do what works best for you.
As for me I want to minimize the shock that it is having. I even put shades on the plant for 4 days or more until new growth had established. And no fertilizer until new shoots come up. Just water it with warm water sparingly when you see that the soil is grossly dry.
The 3 small plants in front are the newly trnsplanted super dwarf cavendish pups severed from their mom.
