Has anyone experienced this? He changed completely. He was calm, easy sleeper, never really cried and easily entertained but his whole attitude flipped suddenly near the end of 7 months (he'll be 8 months on the 10th). He doesn't have much of a problem with strangers, he just smiles at them and hides his face. But at home he is fighting every nap and bed time by throwing what looks like a tantrum (arching back, kicking, screaming, etc). He has also began to cry whenever he is sat down and the person who sat him down leaves the room. He even crys when you walk past him without picking him up or if you take something from him that he wasn't supposed to have. Everything I read basically said it was called the 8 month crisis/separation anxiety. Did anyone go through this with their baby? How did you do it? and how long did it last?