The the development of the neurological infra-structure for attention can be facilitated while the child is very young.
I believe, that it is possible and advantageous to develop and strengthen the infra structure of these neural connections, between the vestibular mechanism and the reticular activating system, when the child is very young.
It starts with the parents picking the baby up a lot and carrying him/her around a lot. There are many slings and front and back-packs available infants and toddlers. They can be carried here and there around the house, and later on, around the community.
The movements up, down and around will constantly stimulate the vestibular modality.
I once heard a man complaining to Dr. Schlesinger over the radio that he did not get personal quality time with his child, whereas his wife seemed to be always doing things alone with her.
Other considerations aside, one activity which he might have considered is to take his child in a back-pack on a "power" walk several times a week.