When a person is looking for a way to communicate in alternative ways, they need to find something that really works for them. They need to try to find a voice that sounds natural. They want to try to find a way to be efficient. They want to be able to communicate as normally as possible, even though they're not using their biological voice.
Sleep is important to all of us, but it's especially important for infants. When infants go to sleep, they start to create neural networks about what they've been learning during the day. It's estimated that as many as one in five children with disabilities have a sleep disorder, and that's higher than the rate of typically-developing children. Finding sleep interventions for these children is incredibly important so they can lay down their brain networks and continue to learn during their early childhood years.