Use Amazon RDS Proxy for connection pooling. Modify the application to use the RDS Proxy for connections to the DB instance.

Create a new RDS instance for connection pooling. Modify the application to use the new RDS instance for connectivity.

Create read replicas to distribute the load of the DB instance. Create a Network Load Balancer to distribute the load across the read replicas.

Migrate the RDS for MySQL DB instance to Amazon Aurora MySQL to increase DB instance performance.