Have you tried using URL Inspection in GSC to request indexing or using a third-party tool to get the page recrawled?
For the exact timing, I don't really have a definite answer.
It could take a couple of days or even a week but requesting indexing through GSC may help Google pick up the changes sooner
I have kinda similar issue becuase recently I have updated some of my details on a few citation sites and Google is still showing the old information in search.
I have submitted those URLs for indexing as well, so I'm currently waiting for the updated details to start reflecting in search