Maria Kihlstedt, Associate Professor in Psycholinguistics at the University of Paris X Nanterre, gives you her method for learning English and preparing the arrival of your nannies at home.
She explains why
It is important that you accompany your child in this important decision you made about acquiring (or maintaining) a second language.
In order to put him in good predispositions explain to him why you made this choice and what he will withdraw.
Talk to him for example about travels, other cultures, open an atlas, show him on a map where are these countries in which he will be able to travel when he will speak the language ...
This will help your child have a positive attitude towards the new language.
Read more in this French article here.