yes, its very worrying. Parents play a big part when it is about communication, you have to speak to them everyday. You dont need to tell them stories. its just simple communications like asking them questions, what are you looking at? Do you like Apple/Orange? You can also teach them color and shapes of the things they eat or play. Or you can bring them out of the house and go for a short stroll and tell them about the sky, clouds, trees, grass, birds and animals around your neighbourhood. it is also good if you have your siblings and parents communicating with your kid, it will be better.