Unfortunately this does not appear to be the option. As per https://learn.microsoft.com/en-us/azure/postgresql/migrate/whats-happening-to-postgresql-single-server
Q. What happens if I do not migrate or my server is not auto migrated by March 28th, 2025??
A. Azure Database for PostgreSQL Single Server will be retired on 28 March 2025. To prevent disruptions or service loss, you must migrate to Azure Database for PostgreSQL Flexible Server before this date.
Key Changes:
Starting 29 March 2025, you will no longer be able to create new Single Server instances.
Existing Single Server instances will be automatically migrated to the comparable Flexible Server in a phased manner—regardless of downtime requirements or application compatibility.
Single Servers using the following features will NOT be automatically migrated and will be deleted in a phased manner, resulting in data loss:
- Customer Managed Keys(CMK)
- Deny Public Access set to Yes
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin