Use RDS instance outside Elastic Beanstalk environment

I have Metabase set up on EB, AWS and noted that when you create the RDS instance it actually gets created inside the EB environment. So if you want to do blue-green deployment for updating docker platform etc then you would create a new environment with a new RDS instance (thereby losing all your settings from the first environment).

Is there a best practice from Metabase side for performing application version updates using blue/green deployment method with a decoupled RDS instance from metabase EB environment? I am asking because I only see an option to create a new RDS instance when an environment is created and no option to use a decoupled RDS instance instead

Hi @ChristineChetty
Have a look here:
How to add existing PostgresDB to ElasticBeanstalk
Best practice for having RDS as part of EB environment