Change the SharePoint Online version limit on the Organization level

Inside this official documentation @ https://learn.microsoft.com/en-us/sharepoint/version-overview seems we can define the version limits on the Organization, sites & libraries. levels

where if we need to change the setting from :-

to this settings on the organization level:-

this effect will only get reflected to new libraries inside existing sites and new sites. but this will not affect existing libraries and also version extra than 100 on existing documents or ones created more than 10 years..

but on the site level, we seems have more control to reflect the changes on all the existing libraries and trim the extra versions using power shell scripts. but doing so will make the site to have unique setting from the Org.

so to be able to achieve what we are looking for by changing the SharePoint Online version limit on the Organization level and have the effect on all the new/existing sites, new/existing libraries and remove additional versions, can we do the following??:-

1. Change the setting from the Org level to be 100 instead of 500, and define Time deletion limit
2. then define this setting on each site separately + apply the trim script to each site.
3. After that to re-force the site to re-inherit this setting back from the org?

on paper this should work, but can anyone advice if there is a shorter approach to follow? and how?