Updating Instance Flavor Properties in OpenStack Cluster Without Downtime

Hello OpenStack Community, In our OpenStack cluster, we recently updated some flavor properties. As a result, we need to apply these changes to all currently active instances that were created with the old flavor properties. We are looking for a solution that allows us to update these instance properties without causing any downtime or needing to resize the instances. Could anyone provide suggestions on how to achieve this? Is there a recommended method or ad-hoc command that can be used to safely update the properties directly in the database? Thank you for your assistance!