Can really empathise with those in the article - my numbers and times are all over the place - my children speak a random mix of german and english.....and yes - often forgetting words!!
Not actually been away that long either which is a little worrying.
I also find if I go to another country on holiday for example, that my languages are even more mixed up and I tend to respond in german to anything rather than english......
Oh what a muddle!