I have a Deco M9 Plus mesh system setup in the home.  I currently have Verizon FIOS service for phone, TV and Internet but I am planning to drop the TV and phone and just keep the internet service.  Once I do that, can I get rid of my Verizon Router and just use the Deco system?  It is my understanding that FIOS doesn't require a modem.  I know I would need to change my Verizon "feed" from the ONT from COAX WAN to Ethernet WAN and plug the Ethernet cable from the ONT directly into the main M9.