Hi Amigo,
I think it's very common. You do not have to worry. Our little angel used to wake up every 1.5-2hrs and it was such a nightmare(since we are 1st time parents) but now he sleeps max of 4-5hrs, which is really good!
I personally find using this particular sling very helpful (pls see photos below). He sleeps so quietly, content and longer hours. I can do household chores without thinking about him waking up at some point, go for walks and wrapped him up before before putting him in his moses basket...
