Bring along any toys or personal items that will put the little one at ease. Do ensure that your child is fed too. Be prepared, the worst thing you can do is get frustrated. Just breathe, and don’t let the obstacles ruffle your feathers.
When there are children involved, it is critically important that you don’t force them to “perform”, especially in front of the camera. Your experience involving them will be a time to play and let them be kids! Play, jump, climb, etc. It will just be having fun!