I have a feeling I'll be responding lots to your posts as my lo is the same age!
This is just my experience, so take it with a grain of salt.
I actually stopped the df because I was having to really wake him to get him to eat.
When I did that, he slept for 12 hours - 7:30-7:30.
Now, he does eat every 2 hours during the day - consistently. He rarely goes longer.
So maybe he's getting enough during the day to keep him asleep at night.
And he's a very big boy - 13.5 lbs. and 26 inches long at 2 months!
I agree wtih Kimberly though that waking twice is totally normal - my child is just abnormal!!!