Im an admin of a club who started a war they didn't mean to start is there any way we can fortify it?
It's too late now. Let the bloodshed begin. Edit: I suggest you read the guide on how to war. :') You're gonna need it.
Upgrade your walls. Put your townhall,defenses,and storages inside and of your base and leave the rest of your structures outside.
But if you have a rushed town hall forget about it, good clans won't accept you and bad ones just can't win wars.