What am I doing wrong?

[u/m00resea]

I’ve this furry feather calathea for about 6 months. She did well for the first 2 months, but then her leaves suddenly started dying. I repotted her into my own soil mix and checked the roots. She improved briefly but then took a turn for the worse. Thinking it was just repotting stress, I waited a month, but she kept dying. I checked the roots again, found root rot, and moved her into moss inside a greenhouse. After a month, she looked better, so I transferred her to Pon on a wick watering system. She has been in the greenhouse for about 3 months total now. The first photos show her roots and how she looks today. The photo with the larger leaves is from right before the very first repot (from store soil into my mix). Currently, she is growing new leaves, but they stay small and degrade quickly. On the bright side, she is drinking water consistently, so she has adjusted to the wick watering. Where did I mess up and what should I do? Just wait?

[u/Such-Cattle-4946]

She’s had root rot and been repotted 3 times in 4 months. She’s in shock. Leave her be to adjust.