I completely know what you mean about the emotional numbness.
In the past I have had long periods of sobriety which didn't alter this state, however this time around, although I have less time, I do have flashes of feeling.
I am not entirely sure what the difference is this time but I think it has something to do with the cbt techniques I am using, they help to keep me anchored in the present and to think about myself and the world in a more realistic way.
It is a slow process but very much worth the effort it takes.