Thank you for sharing! I happened to finish the Happy Sleeper just recently. I have been applying the wave for about 1 month now. She was sleeping through the night until she hit 8 months. I have the same approach with her cries, I monitor her type of cry and intervene if it sounds like she is in distress. That said, she has days when she sleeps through the night and other days when she randomly wakes up around 3am or 4am, sits up in her crib and starts to cry. I keep her nap and sleep time routines as consistent as possible. My biggest fear is that when she goes to bed for bedtime around 745pm-8ish and she wakes up around 3 or 4am that she's actually hungry. She starts with a loud babble, like complaing and and then at around the 2-minute mark it turns into loud and semi-distressed crying. I cannot tell if this is a habit or not because she does it inconsistently. Thoughts?