Do you think "A Game of Thrones" is going to have to retcon in a time skip due to using child actors? (Spoilers?)

So the rough estimate is that the books so far have taken place over 1.5 to maybe 2.5 years. Now going with 1 book per year, and some books like ASOS maybe spanning multiple seasons, pretty soon it seems our cute little 10 year old arya is going to be looking mighty mature for her age. Same goes with Bran, Joffery, and Rickon (though lets face it, his actor is pretty expendable based on screentime).

You often hear GRRM mention he wished he started the characters off slightly older, but 10 years of filming to cover ~2 years of story seems like it might force the issue