The document you provided seems to be describing the act of falling asleep while holding an object such as a pillow or blanket. It tells of how the baby's head was supported by something, which caused the head to fall backward, resulting in the child waking up on its own. The document does not specify what object was used to support the child's head.
When a baby falls asleep while holding an object, it is important to ensure that the object is safe and comfortable for the child. The object should not have sharp edges or points that could harm the child if it falls on them. Additionally, the child should have a light.sleeping routine to avoid being startled awake during the night.
