Hello just wondering if anyone can help with moving up nappy/ diaper sizes. DD is 1 month old and weighing 8lbs 9oz at health visit a couple days ago. We are using mamia size 1 nappies just now which are for 4lbs-11lbs. Next size up is for 6lbs-11lbs. Just wondering if I should change to size 2 - the straps aren't tight to get on and seem fine but the leg parts seem to be making considerable marks around her little thighs and just worried this is hurting or uncomfortable for her. Only reasoning for sizing up would be the tightness/marks around her legs. TIA x