yeah, it's absolutely wild;
my 4yo speaks fluently spanish, english and greek and speaks some german with her german friends
it's wild. At home she speaks english to me and spanish to her mom, but then when we are out and about she speaks greek to the locals
the ease at which she picks up languages (and particularly accents) is incredible, I think that exposing her to all these different languages and accents at this very early age is such an incredible investment that is hard not doing it 😀