My two sons 介日片at around 2.
My eldest son 介夜片 at the age of 3 by himself. His 片片 is dry when he woke, even take away the 片片, he is find. Bingo!!
The small one start to 介夜片 was only two months ago. He will be 4 by June!
他突然說他不要著片片,要介片,we let them to do so. We found he himself weak the maid up if he needs to go to toilet! Up to now, he wet the bed only two times.
May be your BB is not ready yet. Give her sometime.