Hello there. I already had CISSP, but recently chose to self-study for CC as a refresher.
I only used the online study materials provided here, and passed the exam. Your experience should serve you well, but I'd at least give a once-over to the material to become familiar with the scope of domains.
But if you're asking today about studying for an exam tomorrow, it sounds like you'll be forced to go on experience alone. Break a leg!