When we communicate with adults, the conversation is obscured by mind games, innuendos, and cultural overlays. The more sophisticated the person, the more complicated it becomes.
Children, by contrast, are pure. No games, no intentional obscuring of meanings.
Years ago I took an intensive three-week cross-cultural communications course taught by a Swedish psychologist. Her advice was just that: if you want to become a better communicator, spend more time with children. You learn the way people should communicate, so it builds your ability.
Stuck in a home office while you take care of your children? You are in the ideal situation.