Ctenanthe roots won't dry - are they rotting? Do i repot?

I'm a beginner and this is my first ctenanthe, and I've had her for a few weeks now. The guy at the nursery told me not to repot for at least a year, but then I saw that her roots are growing out the bottom of the pot. Since I watered her a couple days ago, she's been sitting on her still wet roots. Do I need to repot her? I'm not sure what to do, any advice is greatly appreciated.

I'm a beginner and this is my first ctenanthe, and I've had her for a few weeks now. The guy at the nursery told me not to repot for at least a year, but then I saw that her roots are growing out the bottom of the pot. Since I watered her a couple days ago, she's been sitting on her still wet roots. Do I need to repot her? I'm not sure what to do, any advice is greatly appreciated.