Our home and kids are bi-lingual.
Since birth, my Husband and I talked to them in our languages.
My kids, know more than me in fact.
Their brains are more flexible sponges for that.
Sure, the predominant language here is English and that is the primary exposure my kids have. But they can understand/speak/read in my Husband's language.
And sure, my kids speak, English as their go to language.
My Husband speaks English and his language.
I only speak English primarily.
I am not totally fluent in the other languages.
Also at school, my kids learn and know, Hawaiian and Japanese and Chinese. And its fine.
To "maintain" my kids knowing their Dad's native language (he is from Europe), he speaks to them in his language, daily. AND he also MAKES THE TIME, to sit down with them and teach them it. Like homeschooling them in it.
Growing up in Hawaii, per previous generations, they were all multi-lingual, many of them coming from other countries. And the kids grew up that way... speaking and knowing many languages... their parent's native languages plus, English since that is what was taught in school. But at home, it was the native language that was, spoken to the kids. So my Mom and all the previous generations, grew up that way.
And they got fluent.
It takes effort and time, to teach the child, "your" language... and since the predominant language here is English.
At home, you speak in your native or cultural language.
At school they speak English.
But never, use both languages in the same sentence. Otherwise, the child learns the language, wrong.
And you also can have your child join cultural groups. And you as parents join too. That way, you are in a group that is of that culture/language. We did that too, with our kids.
Just Google search Armenian culture groups in your city.
Also, Google search "Armenian TV shows".... etc.
And that way as well, you can have your child watch it.
And also that way, they learn about the culture.
Learning a language... .ALSO entails, learning about the culture.