Hi first time using a sling yesterday my baby seems to scream for the first 5-10 mins I check all around and it’s not too tight I tried with it looser where she slumps a bit but she still screams sometimes stops breathing how hard she cries do u think I got her the sling too late and she’s too old to get use to it? She’s nearly 7 weeks after 5-10 mins of me swaying shushing and tapping her bum she goes to sleep and stays asleep for hours is this normal? Will she get use to the sling?