Phal has big keikei @ top of old spike ... now what?

[DevvyGirl]

Greetings! One of my Phal's got done blooming months ago and just a few weeks after cutting the spike, a baby bump popped up as well as a new leaf from the parent plant and before I knew it, leaves were sprouting from the bump! Now, I have two leaves, each about 4 inches long, but still no indication of independent roots. I have loosely wrapped a small amount of moss around the base of the keikei (see photos) to see if this will stimulate root growth so I can clip and pot it. Am I doing this correct? Should I be doing something else? I did not want to cut the new plant off too soon and risk having it die.

Thanks!!! -Devon