I am very aware that I have social deficiencies. Not necessarily aware of each individual item.
Sometimes, I make a social mistake or just plain don't know what to do, and I am completely, acutely aware of it. It's just that it's either too late, or I don't know what to do about it.
Sometimes, I make these mistakes and don't know that they were wrong or awkward. Then they either get pointed out to me, or I just go on not realizing until someone does point it out.
As for the social nuances themselves, I am and remain unaware of them until someone either explains them to me in a rote manner, rather than a social or emotional one, or until I figure out the rote steps for myself, without knowing the underlying principles.
I tend to be avoidant. Because I know I have deficiencies, and I know that I can't necessarily tell where or how they will crop up, I stay away from situations that could be trouble. I talk to people I know, or I respond to questions (not asking any of my own or elaborating on the response). I know that that in itself could be trouble, but it's the best I can do.
(I did get a formula for small talk from my doctor: let them begin it, and then it's okay to answer, after which you can either say nothing - which might be awkward - or respond by asking them the same question they asked you, because that's guaranteed appropriate.)