Quoting TheNuge:" <blockquote><b>Quoting Tarasilver:</b>" My daughter is about to be 6 months old. She ... [snip!] ... tomputnherself back to sleep. I highly suggest getting the book from the library. It helped me the most during her infancy."
I bought that book when I was desperate to fix LO's sleeping habits at night. I also go the 90 minute sleep cycle I read that one. I have yet to read the happy baby healthy sleep habits yet. LO sleeps great now but I want to read that book also still.