Semantics might help here. Forget Supreme Being - what about Supreme Intelligence? Do you believe each of our brains represents the pinnacle of universal intelligence?
I am not sure what the difference is between supreme being and supreme intelligence.
Does supreme intelligence have self-awareness?
The difference is in freeing you from having to think of God as an anthropomorphic entity, while acknowledging that an individual's brain is not the highest order of intelligence, but more likely a small part of universal awareness. Then the "self" part of "self-awareness" becomes moot.