My 6 month old is grabbing her ears...

Ra

So my daughter is almost six months old and I have been noticing the last couple days that she has been grabbing her ears and opening and closing her hand like she does on me while breastfeeding. I think it’s a soothing thing she isn’t cranky when she does it. Is this normal self soothing? I played with my ear lobes as a child to soothe myself. Thoughts? She seems to be able to hear fine.