My son is now 2 years old and he cannot say R (he would either use another letter or say something more similar to "v"rather than "r").
What concerns me is that R is one of the first letters he was able to say! He would sometimes go on for a couple of minutes "singing" tr-tr-tr-tr.
Is it possible for a child to "unlearn" how to make a sound?
NOTE: I am Italian, my wife French and we live in UK. When together we speak Italian. My wife speaks French/Italian when I'm not with them. His friends all speak English. By "R" I mean the way it is pronounced in Italian, not English.