My little boy is 10 weeks old and sleeps 7pm-8am. He still wake for a feed and usually goes back down without an issue. However around 4am he wakes and becomes very restless in and out of sleep! I've not found a definite answer to stop this. He's currently still being swaddled as I'm concerned if I chance to a grow bag he will wake even earlier at this time because he's not tucked in. Is this something they grow out off?