OSDOCS-13114: Update short-term creds note for Entra postinstall

Author: jeana-redhat

authentication/managing_cloud_provider_credentials/cco-short-term-creds.adoc

@@ -10,7 +10,12 @@ During installation, you can configure the Cloud Credential Operator (CCO) to op
 
 [NOTE]
 ====
-This credentials strategy is supported for {aws-first}, {gcp-first}, and global {azure-full} only. The strategy must be configured during installation of a new {product-title} cluster. You cannot configure an existing cluster that uses a different credentials strategy to use this feature.
+This credentials strategy is supported for {aws-first}, {gcp-first}, and global {azure-full} only.
+
+For {aws-short} and {gcp-short} clusters, you must configure your cluster to use this strategy during installation of a new {product-title} cluster. 
+You cannot configure an existing {aws-short} or {gcp-short} cluster that uses a different credentials strategy to use this feature.
+
+If you did not configure your {azure-short} cluster to use {entra-first} during installation, you can xref:../../post_installation_configuration/changing-cloud-credentials-configuration.adoc#post-install-enable-token-auth_changing-cloud-credentials-configuration[enable this authentication method on an existing cluster].
 ====
 
 //todo: Should provide some more info about the benefits of this here as well. Note: Azure is not yet limited-priv, but still gets the benefit of not storing root creds on the cluster and some sort of time-based rotation