We’ll of course it depends on the scale of the changes. Depending on how your calling them, the version could be in the url, such as zooms api including /v2/ in the urls. Then you can introduce /v3 with many changes whilst leaving /v2 in place for some amount of time.

If /v3 also means a complete change of database and other underlying infrastructure (eg removing the concept of a zoom meeting), then you’ve got different challenges. Those are probably about overall design, not api.