The reason I ask is because my baby HATES it. She's 7 weeks old...I'll put her on her tummy on the floor and she'll cry really hard. She won't even attempt to lift her head or chest....she'll just lay there on the floor either with her face smushed or turned to the side...and cry.

Are there alternative ways to do this? Or is it all that necessary? She moves her head around a lot when I hold her upright.

Any suggestions would be great!