Baby slept through the night with MIL

Taylor

My MIL watched our son on Saturday because my husband and I went out while I had a friend in town. He had no issues with bottles and he completely fights me with bottles when I try. And she said he slept from 10:30 to 7!! He has never done that for me. He always wakes at least once or twice and right now is doing more like 3 times. How did this happen?