Failover for GUP - client to get updates from another GUP already active

Hi,

Is there a way to configure a LU policy that states - when GUP A1 is offline, it must start obtaining updates from GUP A as a failover and when GUP A1 comes back online- client stop getting updates from GUP A and start getting updates again from GUP A1. I don't want the clients to bypass the GUP and get updates from the SEPM.

Thanks in advance for any assistance.