Just pass by and saw your post. Are you mean the Night Bloom Jasmine ? My neighbor has one in 5 gal pot for 15 years. Heavily root bounded but it flowers every year. I have new cutting in 1 gal pot this spring . The plant is about 4' tall now. So it depends on how large plant you have and how often you want to repot it. It grows pretty fast.

This helps...thank you!!!!

These plants really do well and grow when they are super root bound. I had mine in a 5 gallon container and it still got as tall as me at 5 ft 6.
I think it you want nice and full and bushier maybe a bigger pot? Thing is mine lose leaves every year so looks kind of scraggly.