And as we proceed to follow these dreams, I ain't losing no sleep
Ab is following his dreams and he isn’t losing any sleep.
An alternative way to read this is as:
I ain’t losin' / NO SLEEP!
As in, He won’t lose to the competition because Soul doesn’t sleep. He is in the studio working all night. “No, No" is the confirmation that he will not lose. “On them NoDoz" because Soul doesn’t sleep and is constantly working, he uses NoDoz to keep him awake.
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