It depends on your financial capacity, the ability and age of the child.
Often parents are trying to talk to the babies at home, then in a foreign language, but it just hurt.It is necessary that at this age the baby heard the speech of native speakers: clean, without any foreign accent, grammatically correct.And another important point: one person - one language, ie,you communicate with your child only in Russian, and nurse - in English only.
In general, it does not matter, when to start, it is important to choose an appropriate methodology.And one more note: foreign languages easily given to those who know a good home.Most importantly - Russian!
This year I finished the translation, all the stages of learning English has experienced the hard way, I write from my own experience:) ) Good luck!
25 December 2016