Amazon RDS allows specifying an instance type when you manually add a reader replica. However, if I add a "replica auto scaling" rule, it inherits the instance type from the writer instance.
For example, I'd like to have my writer instance "db.r5.large" while all my reader instances being "db.t3.medium"s. The RDS GUI does not allow to select instance types while defining the auto scaling rule, unlike EC2. Is there any way to accomplish that?