GKE Internal Load Balancer

Hello! I am new to HiveMQ and I am trying to create a Kubernetes cluster in GKE to run HiveMQ. I was able to follow this guide to install using helm. However, our organization does not allow external load balancers to be configured on Kubernetes services.

I was hoping someone else has either run into this or can help me reconfigure the load balancer to be an Internal Load Balancer instead of an external load balancer using the Kubernetes operator provided by HiveMQ. Thanks!