Exactly. I feel for you. I am in the same boat. With young kids around I was forced to wake up 2 hours earlier than my circadian rhytm would dictate and it's been a nightmare so far.
I need to compensate each day with even more coffee than normally and my head's just spinning by the end of the day because I am too exhausted.
Since my rhytm cannot be forced to the early waking, on average I only sleep 5 hours each night.
It's a constant torture.