Millie started sleeping through the night a week and a half after we got her, so about 10.5 weeks. For the first week, one of us would sleep on the couch next to her and sah shhh very calmly and consistently, she would only whine/bark for a couple minutes. We slowly weaned from sleeping with her the entire night, to then only until she fell asleep, and now not at all. She sleeps from 10-7 with one bathroom break at 11. Those first couple weeks we were VERY tired!