miguel,
you have a weak plant..not your fault, it was that way when you bought it.
you are also over-fussing with it, and over-thinking..here is what you should do:
1. dont repot it.
2. put in a tray of distilled water, or rain water.
3. put it outside in FULL sun. not indoors, not on a windowsill, not under shade, outside in FULL sun.
Do *nothing* to it for the next month, except keep water in the tray.
That will give it the best chance of surviving..
all you can do is give it everyrhing it needs: good water, and FULL sun.
the full sun will take care of the mold..
the fact that you are getting mold on the surface tells me you havent been giving it enough light!
and/or..you have it indoors, or too sheltered from the elements..
also, where do you live? (just a city and state is fine)
your location will be important when its time to think about winter dormancy.
Kat,
you should consider stopping giving advice until you have been growing CP's for at least two years..
about half of what are saying is wrong..it's not helpful.
you haven't yet learned the difference between what you read on the internet, and what is true..
sorry, but its just a fact..there is a learning curve.
Scot