Mike, I wanted to add that recovering from a brain injury can take years, so if today doesn't bring another big milestone, do not be disheartened.
I've kept up with research on brain trauma, if you have some general questions I can answer or help find answers. In the last 14 years medical understanding of the brain has advanced light years, but so much in the brain happens below the cellular level which is way smaller than the resolution of current imaging technologies such as MRI and CT scans. Healing may not always be obvious, just know that it is happening.