My baby is 4 months and have not flipped yet, how do I help her flip?

play on the floor with her as much as you can to improve her muscle tone and general coordination. when she is having tummy time, talk to her and make sounds on the other side so she will learn to turn her head to see where the sound is coming from. this helps strengthens her neck and back muscles. you can also help give her a push to flip over without lifting her shoulders off the floor. let nature take its course! my son could only flip at about 5 months and couldn't stop doing so after he has acquired that skill!