My first never really woke up in the night after she started sleeping through the night. But my 10 month old has done it since she was 4 months old. She slept through the night until 4 months. She will wake about an hour after going to bed and we have to go in and put the pacifier back in and she goes back to sleep. And she may do this a couple more times. But usually never does she wake up after say 4AM. And then she sleeps until 9:00. She goes to bed at 9PM. We tried everything! More food, less food, gas drops, gripe water, teething gel, tylenol. Thinking it may be teething. Or may be this is just normal sleep patterns for a baby?????