See if it can help. It is my experience.
我囝囝現在3歲,佢都係成2歲4個月先講嘢.不過佢1歲半就戒片,2歲就連夜片都戒咗.
佢1歲半時都係講bb話,時藉hot summer,我就叫個工人日間唔好同佢著片,每當佢wiwi時就同佢講:"bb wiwi,"不久每當佢想"wiwi"時,佢就會話wiwi,工人就馬上拿一個wiwi盤,(通常我哋會放在客廳同一個位置).就算有時佢遲咗出聲,我哋都唔會罵佢,這樣下去,大約一個月佢就自己去拿wiwi盤wiwi,跟住連wiwi盤都攞走,要佢去 toilet wiwi. 記緊每次佢有小小成功or進步,都要讚佢.剛開始時,佢只要唔係條片到wiwi,我都讚佢.佢好開心.......跟住就唔抗拒.