We have ours as well with Caleb.  We think it was the heparin that caused his brain anurisium.
Caleb started speech therapy 2 months ago.  He's now able to say 2 to 3 word sentences.  His sessions were sunday afternoon,  but got switched to monday evening.  Now,  monday is back to back physical therapy then speech therapy.

If you get the chance take your son to see the IronMan movie.  It has really motivated my son.

I'm sorry I didn't get the chance to work on your outfit yesterday.  I'll work twice as long tonight to make up for it.