My daughter is almost 16 mo old and her latch is getting worse and worse . . . she pulls back very hard on the nipple and keeps her mouth tight and pinchy. We then have a "tug of war" where I try to keep her from pulling her head back too far and she tries to push away. Not sure exactly when this happened . . . must have been very gradual . . . but it is getting really uncomfortable. I have tried detatching and relatching and making sure her lips are flanged (which they usually are) but it doesn't improve much. I really need her to open her mouth wider but not sure how to get her to do this. She is also teething (her eyeteeth are coming in) but the latch issue has been going on for longer than that. Anybody have any advice on how to improve a poor latch at this "advanced" age ?