Jenniifer,
dont think need to see specialist lah, some bb even can't talk at 2.5 years old but later can speak so well, just that some bb speak early, but at the end of the day they are all same.
yesterday night the reunion dinner, when my FIL came, I ask ruoxi what u should say, she immediately say "gong xi fa cai, hong bao na lai", my FIL feel so amuzing, then he said only on chu yi then give angpow.haha.