T.C.
Lots of good suggestions here. I'll just throw in one more thought: sometimes kids just need to cry at the end of the day. They're tired and stressed out (being a baby is hard work) and they just need to vent. Once they get it out of their system, they fall right asleep. I was a bit like that and I see it in my own kids at times even today (they are 11 and 7). If none of the other great suggestions here works, you might think about this.