I've never used a pi-hole; but assuming it works as a DHCP server and a DNS resolver, then you should only need to disable DHCP in your router. I've never seen

I've never used a pi-hole; but assuming it works as a DHCP server and a DNS resolver, then you should only need to disable DHCP in your router. I've never seen a router than wouldn't let you disable the DHCP server.