Your orchid is fast growing and in a year you can divide it. No need for keiki paste. As for dividing now, you can do that if you like, but I recommend growing it into a large showy plant. The new growths will each produce a p-bulb and each of them will also produce a spike on a healthy plant. Cut off the spike that has flowered about an inch or half inch from where it leaves the plant. If you do not cut it off, eventually it will turn brown and brittle and you can just break it off. Either way, that spike is finished.

Cheers,
BD