How to refresh Select type when reloading a form / re-do the query

I have a form that is reloaded when a user clicks on a button. Some of the fields are selects which should be updated with new values added after the user clicks on the button but in order to see those select fields get updated I have to navigate out of that form and back to it.

Is there a way to force a form to reload / re-do the query for each select without having to make the user navigate away from that form?