Yours looks like it's too cool and moist. What are your temperatures?
If it ever gets under about 65 F where it is now, I would stop misting it and let it dry out completely. If it were healthy I would have suggested a much lower temperature. They live far longer dry and sick than moist and sick. A healthy plant can easily go all winter without a trace of water at cooler temperatures.
Then next spring when it warms up move it to a medium that works better for you.
Growing in the moss mounds is for people who can look at the plant every day and water exactly when it needs it. I can't do that. Or it's for people who have weather like back in Japan. I don't have that.
I grow them in large bark or LECA and water them erratically. I don't water at all when there will be cool weather. They do fine.
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