That looks great! It could probably stay in there for years. Just trim once in a while if some stem are bothering you.
I never repot that kind of plant, just cut everything off @ soil level & stick the stems back in, in a new pot. You can put the fallen leaves on the soil surface & most of them will sprout new plants. Or you can lay them somewhere in similar exposure to the plant & wait for roots to form if you want to watch that happen first.
If you can get them to stay in the same position as they were on the plant (top vs. bottom,) they're more likely to be successful, IMVHO, because they can get sunburned if they are upside-down.
If you keep the pot as-is, and it develops a naked stem appearance at the soil surface, you can toss some leaves in the pot to get some fresh new stems to cover that.
Lots of fun things to do with these beans! : )