I read this article and it has some good advice but I tried almost everything and I swear my daughter just don't like to stay sleep for long. I believe she thinks she is going to miss something. I thought by now, she can sleep 10 hours straight every night. But no..she sleep when she wants. Some nights she is very restless. I rub her back, sing, put on classical music, rub her stomach, pray, read a story etc. I'm the one suffering.
Here is some info from an article from www.whattoexpect.com