Ingress gateway logs to ELK

I have a requirement to store the access logs of ingressgateway in ELK for longer duration. I am using filebeat as daemonset to forward logs to logstash. Enabling access logs in istio config map will turn on access logging to all the istio proxy containers, which I do not intend to do right now. Is there any custom configuration to enable access logs for ingressgateway pods alone?