Wow, what a good little sleeper!

I just read the book Baby Bliss and it went through routines for a 6 month old and it suggests 3-3 1/2 total hours of daytime sleep (x2 sleeps a day) and 11 - 12 hours of night sleep. It also suggests that at 6 months a baby should be awake for 2 - 2 1/2 hours at a time.

Hope this helps