Double NAT
So I have 2 Internet providers feeding my home both connected to the R600 WAN ports. I then have a Google WiFi network connected to the R600 LAN port. In my Google network I have multiple TVs, computers, phones, tablets and a Asustor NAS with a Plex Media Server running. The problem I am having is that I can't reach the NAS server from outside of the home due to what I believe is a Double NAT situation. I can't turn NAT off on the Google Mesh Network(I'll loose the mesh). How do I get around this so I can reach the Plex server as well as the NAS from outside of my home networks through the internet?