Dioscorea mexicana repot?

Hi! This is my one and only caudex and I’m wondering when I should repot and expose the caudex. I bought this plant from an online nursery a little over a year ago (second growth cycle with me).

How should I judge if it needs a repot to expose the caudex?

Any other care tips are very much welcome and if you have a huge beautiful one I would love to see!