TI wonder what he'll call himself in this book, since he apparently did not even though the General, Rassilon and everyone else did
I was thinking about that very thing recently. And here's what I came up with.
I think it's very possible that he did, in fact, refer to himself as "the Doctor" during his lifetime. Yes, his first words were "Doctor no more," but at that point he hadn't done anything bad, and even as the War raged on and he was forced to do more morally ambiguous things he could justify them in a larger "ends justify the means" framework and that he was being the Doctor by doing them. In this view, it's only when he decided to timenuke Gallifrey and steal the Moment that he realized that a line had been crossed as he was, truly, "Doctor no more." And, if so, that's the point of what the Moment does, to show this man who has just renounced his own identity the person that he was and would be.