My aim for all my newborn sessions is to make everyone feel completely comfortable. So upon your arrival we will always get you settled in, the cameras won't even be used within the first 30 mins of your session.
Siblings can explore their surroundings, become familiar with me and my camera and in no time they will be quite happy to come sit by the window with me. Bringing their favourite snack (I suggest avoiding chocolate or anything too messy though!) or a new cuddly toy is always a great idea to make them feel comfortable and at ease! We save the ipads for last resort if they tend to be glued to them once they get them in their hands.