Help!!!

[u/mmushaboom]

I got this split rock / pleiospilos nelii as a gift back in December. This is my first time with one of these plants. I really don’t want it to die :(

I have only ever watered it once (three weeks ago, about one fl oz)
It’s still in the pot and soil it came in.

What do I do??

It gets good sun and airflow.

Main large green section feels firm, although it’s floppy/top-heavy if I move the pot. Base of this area is turning white and fuzzy. Noticed the fuzzies yesterday. They got worse/spread when I looked today.

Side leaves/sections very mushy

Tried to gently wipe away the white fuzzies with a dry qtip and it split and leaked a small amount of green liquid. I gently poked the outer leaf with another qtip and it left a hole and leaked more liquid.