Female led relationships discussion

I’ve been pondering lately how to recognize when you have “broken” your submissive. My partner and I have stayed in chastity since late September. Although the initial months centered on him surrendering orgasm control while we figured out our dynamics. The shift in my boy’s attitude has been remarkable; with each passing week, I see him gradually relinquishing his alpha status around me entirely. SO here is the question How can you tell when a sub is completely broken? I am eager to read everyone’s perspectives.