I speak Korean and English to LO (who is now 10.5 months) and DH speaks English (sometimes Cantonese) to her. She is pretty behind verbally and only says "umma/mama" and "baba". Our pediatrician doesn't think we should be concerned and that she may be developing slower because we're speaking all of these different languages to her.
Do you agree? Do you find that it applies to your LO?