I recently had my 3rd child, she is 4 months old now and she won't stay asleep. The only way she will fall asleep when I walk around holding her and she will only stay asleep is if I continue to hold her or lay down with her. When I try to put her down or move away if I've been laying with her she wakes up immediately. I even tried the CIO method a few nights ago and she cried so hard it caused her to throw up. I don't know what to do, I'm starting to go a little crazy. I can't spend all day every day just walking around holding her. Any suggestions or advice would be much appreciated!