Sometimes I think that there isn't such books and programms at all. But You can start to teach them as the any other young learners, songs, poems, and some simple words, simple grammar. If you need I can copy you some exercises and methods of work from the book of teaching English as a second language for young learners. You can try the same programm and words at first. I think it can be acceptable. And we can find some poems and songs which Russian children sing at this age that you can use with yours. Write me epyatakova@yahoo.com and let's think together.