Don't try it so early and so often. Every baby is different. It may be as late as 6 - 7 month old. Wait another week and then try again. If still not ready, just wait again and again.
【在 A*******r 的大作中提到】 : Don't try it so early and so often. Every baby is different. It may be as : late as 6 - 7 month old. Wait another week and then try again. If still not : ready, just wait again and again.