Our son does this too and to start with it would wake him up but it now helps him to self soothe. Very odd but it seems to work for him 😂
We had this with my daughter last week. She would wake up every time I put her down. I found that if she was actively sucking her dummy, she would more often stay asleep whereas if she had dropped it out and looked like she was in a deep sleep, then she would wake 🙄 it was a battle of timings. The leg slamming is a self soothing thing, although so loud and difficult! My son did it to the point that we had to move him into his own room just before 6 months.
@Charley unfortunately every time he wakes up he screams 🥲
Ah I’m glad it’s normal then lol, hopefully it stops waking him up so much soon! we had 4 failed transfers by 11pm last night 😅 so after that it was time to co-sleep.
It's called whale tail 😆 it's just a new skill he's learned. If he's not crying don't pick him up. It can actually be part of the self soothing behaviour as he's getting his wiggles out before sleep.