Starting at home......
Etoile - Great question! Let me explain my suggestion.
Within the intimacy of the home, the language that is familiar and used is English, for everyone. One of the greatest challenges is communication now within the family itself. Learning the entire system of Cued Speech, takes approximately 16 - 20 hours, after that it is simply practice.
This is huge misconception by people, that cuers can only communicate with other people who cue. This couldn't be further from the truth. 
They communicate with people who understand/use English, they may choose to use voice or printed message. Also, a deaf/hoh person who cues has experience with a system that has "honed" their speech reading skills.
Yeah??
