I'll step on my soap box for a few minutes here.
I know a lot of new moms who dread that question. "Is the baby sleeping through the night yet?"
It's so loaded.
There's feelings of failure if the baby ISN'T sleeping through the night, and feelings of accomplishment if they are.
I'd like to stand up and say that my current "baby" can walk, talk, and is closing in on a year and a half old. He's charming and happy and deliciously sweet. And he does not sleep through the night. He never has.
It took my girls a long time, too, but they can do it now.
It's OK to have a baby or toddler who wakes at night. It is!
My response to the question has always been to smile sweetly and say, "My baby is a GREAT sleeper!"
And I mean it. Even though I haven't slept through the night in about... 7 years. :)