Help with my first Keiki

[estación seca]

It's too small. Let it get 2-3 good sized leaves and more roots the size of the biggest one. Just cut it off with a sterile razor blade or hobby knife. Pot it into your favorite Phal potting mix and treat it like your other Phals.

There is a small chance your hand will be forced if the stem dries up after the flowers fall. In this case pot it up as above. Otherwise I would wait for more growth.