Just my 2 cents on the matter: i teach my boys in English since they are taught in English. Partner has no learning issues and now knows how to read at the first grade level. I do not plan to teach him how to read in French until he reaches 3rd grade. V is not learning as fast as his brother but I feel it helps him to stick to English for academics.
Once they have good English reading skills, it will be easy to learn reading in French. And I have been buying books in English for them since most of my kids books are in French. It helps reinforce what they learn. It does not mean they are ever read to in French. But the French reading is more casual while they tend to be more active when we do English reading.
My approach is not scientifically based, just following my gut feeling! lol
Once they have good English reading skills, it will be easy to learn reading in French. And I have been buying books in English for them since most of my kids books are in French. It helps reinforce what they learn. It does not mean they are ever read to in French. But the French reading is more casual while they tend to be more active when we do English reading.
My approach is not scientifically based, just following my gut feeling! lol