Completely normal! My daughter did it when she was a baby and it was like she was angry we were putting her to sleep! My son does it too ..I think it’s a way of getting last bits of energy out/ self settling
Mine does but way more angrily 🤣
Same story. He is like singing to himself
Mine does 😀
Seems it's not unusual then! Although she's started doing it whilst feeding too which does feel odd. But maybe its just her being content.
Mine does this too, i call it low power mode 🤣
Mine does! It’s quite a good indicator to know when he’s tired vs hungry etc x