Here are the Sclumbergera seedlings, from seed I planted two weeks ago.
I don't have a macro lens, so they are difficult to see. There are about ten seedlings.
I had them on a seed starting warming mat. The pot was covered with plastic wrap to maintain warmth, uncovering daily to air out. I read they need light, so they are under an LED desk lamp.
So far, so good. Today I watered from below and turned up the light intensity. I have not done this before, so it is an interesting experiment.