Question - my baby is doing this new thing where she rocks back and forth on all fours. Shes started to hit her head on the crib when doing this...

She cries and cries ...even when she’s overtired she gets back up on all fours and rocks back and forth...

I’ve gone in put her soother back in moved her away from the sides ... and rubbed her back... she calms down for a bit but continues trying to get back up on all fours ...

Is this like a developmental thing ?