Hi @eocweb
You can always modify the query of a relationship field by using the “acf/fields/relationship/query” hook. Please take a look at this page to learn more about it: https://www.advancedcustomfields.com/resources/acf-fields-relationship-query/.
To learn more about ordering a query, please take a look at this page: https://codex.wordpress.org/Class_Reference/WP_Query#Order_.26_Orderby_Parameters.
I hope this helps 🙂
