Flip: Back to Tummy

Today, just a while ago, darling flipped. At four months old. From back to tummy while mummy is busy pumping. She did that for a few times. But asked for help when she's stuck at her tummy.

I wonder why now she just refuses to flip from tummy to back. It's not like she doesn't know. She just lie there, head resting, drooling and asked for help. 

I'm a happy mummy.