copy-acct-to-home-server

Hello, We have been forwarding to the acct packet to third radius server with copy-acct-to-home-server feature. Last week we faced severe issue with this as the third radius server unresponsive to the packet, with this case it hit all the DB resources. Is there any way to send response to my NASs about the acct packet, even incase my third radius server didn't respond or get down. Regards, Srijan