Speak to them according to their actual age, not as if you were speaking with someone younger. Talk about one subject at a time, using short sentences.
त्यांच्या खऱ्‍या वयानुसारच त्यांच्याशी बोला, लहान मुलांशी बोलल्यासारखे त्यांच्याशी बोलू नका.