my daughter is soon gonna be 21months.. I have a concern for her speech.. we speak 3 languages in our home..my husband has different language and I have different mother tongue and my husband and me speak in hindi and sometime in English.. she understand my language more like she calls mama and juice , ball, car ,say bye bye and tata, and says alot of things I don't think she means all those words , and for most of the things she says Dada like for papa, her toy teddy etc, even if I remind her not Dada still she will say Dada,,... should I be worried for her speech?. rest she doesn't have any other problem like commands she follows, she has good eye contact , give kisses when asked, give hi-fi and hand shakes!!! and she has screen time for like 3 hours a day....