My little girl started sleeping through the night this week, she's 10 weeks old and 11-12 lbs.
Sleeping through the night is great! From 9pm-5/6am. But her diapers have taken a change. She no longer has 5-6 BM's a day, she's doing 2-3 and they are more solid and dry. She is however having MASSIVELY wet diapers. She soaked through one the other morning in 2 hours!
My theory is that her liquids are being expelled through her bladder now and not her poop. Am I far off the mark?