Parents are their childrens’ main spoken-language teachers at India’s AURED school, which teaches the AVT (auditory-verbal) method. One critical point to note regarding AVT is:
Recent research indicates that the critical period of ‘learning’ [to hear] starts from the sixth month of pregnancy up to 2 years and therefore early diagnosis and intervention is essential. Children with significant hearing loss who receive hearing aids before the age of 6 months, and a cochlear implant between the ages of 7 months to 1 year can develop language skills similar to those children with normal hearing.
More details about AURED and the AVT method are on this website for readers new to the topic and principles of AVT.