My son is 4 years old this year. He is now in fei yue early intervention school jurong east, attending daily 2 hours (am). He can pronounce a to z, and number 1 to 10 at ease, but refuse to speak other than these. I try to find a normal childcare for pm session, but no luck. Either no place or refuse to take him as he is too active, does not want sit down during lesson. I am worry for his development. He is a clever boy and can understand what we tell him, only no speech yet. Any advice for me ?