My son is 1 mo old today. I exclusively bf, and I'm sure I'm supplying plenty of milk (weight gain is good, having plenty of wet/dirty diapers). Problem is he latches on well when ready for feeding but then he continuously pulls back. He isn't staying latched for more than 2 min at a time. It's frustrating to both of us! This is my 3rd child and I'm far more patient than with the first 2...I don't know what to do!!???? Suggestions??