Are there tips for baby to pick up baby sign language faster?

The most important thing for parents to do to help their child pick up signs faster is to be consistent in their signing.  It is more important for parents to sign each and every time they say a word than to sign 30 words once in a while.  I always tell parents to start with a few signs that they are comfortable with and use on a regular basis, such as the word ‘milk’.  Every single time you say the word ‘milk’ make the sign.  The baby will pick this sign up faster than if you only sign it ever few times you say the word.  You can sign as many words as you want and introduce as many as you’d like however, make sure you are consistent.
It is also important to keep in mind that all babies are different, some are going to pick it up faster than others.  I started signing with my daughter when she was 4 months old but she didn’t start signing back until 9.5 months.  However, I’ve had parents in my class who started signing with their baby at six months and the next week they started signing back.  Others have not signed until eleven or twelve months.