Hi, My 45 days old baby was uncomfortable on shoulder crying continuously and wagging his head here and there . I was giving him burp by holding in lap in sitting position with one hand holding from neck and cheek and chin supported and rubbing from back from last 45 days. I read today that it's really bad to make baby sit before 4 months or so till the baby hold the neck. Is it bad to burp this way ? Do I need to switch to shoulder hold?