Graceful BGP Shutdown

Hi,

We have two routers which peer to our two ISP's using BGP. These routers then peer between each other to work out the best route out etc. The kit is Cisco ASR's.

I was wondering how you guys would shut the peering down to one ISP for maintenance?

I have been reading about graceful shutdown command - https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-3s/irg-xe-3s-book/irg-grace-shut.html

Thanks, Matt