Can unsubscirbe a Erizo Agent from RabbitMQ to drain that node

I want horizontal scaling for the ErizoAgents or maybe the controller. I don’t see issues when adding more nodes which run the Agents. Is there a way to tell unsubscribe an Agent from the RabbitMQ queue to drain that node?
So it will process the existing connections but won’t get new ones.
Do the Agents know how many connections they have and can I get the amount?
We currently run licode with Docker containers.