7.5 month old has changed her cry

Alicia
So my daughter has changed up get cry & something is telling me it's for attention 😂 this morning she even tried holding her breath and when I responded in a panicked way (obviously) she actually laughed. She laughed in my face 😂 and has through out today been doing it to gain my attention. Blimey they are a handful! Anyone else noticed their babes starting to demand attention in new ways?