Disadvantages

-You have to be consistent with using the signs.

-If you don't use the verbal words as well as the sign it can hinder their speech.

-It takes time to teach the children the signs.

-You have you have to be able to remember the signs as well.

-If no one else in your family or teacher uses the signs they won't know how to help your children.

-Once they have learned sign they may not be as inclined to use words and just use signs.

-Baby sign is not all completely the same as ASL that is used, so they could get confused when around other signs.

-Wide variety of signs that are used it's not all the same.