Obviously he's awakened- Oda didn't need to say this shit with Kaku, so I don't see why people are clowning him for not saying it with Kaidou.
He knows about awakening and has incredible endurance, recovery, and vitality.
His face and body also change from time to time, and this clearly isn't a mistake because Oda does it constantly.
He's awakened, Oda just didn't spoonfeed it to us like with Luffy or Lucci.