We have a bilingual household with my mother tongue being french and my dh speaking english. My dh has some arabic in his vocabulary as well from his cultural background that we are trying to keep alive. My ds is 2.5 and has heard both frencha nd elgish since birth. I only speak to him in french, regardless of who's in the room. My dh speaks some french but mostly english to him. He hears french and english at his grandparents homes, depending on which household he's in (they are his caregivers when we're at work). We have books, music and videos in both languages. At age 4, he'll go to a french preschool and then french school.
ds obviously grasps both languages and will use both in a sentence when he speaks with me, or others who know french. He's obviously drawn clear lines in his mind as to who is supposed to speak what language as he will tell his english speaking grandparents not to speak french if they try.
I'm wondering how much to push things. ds has started speaking in full sentences in recent months. You can tell he's got to think through what he wants to say at times. But he's really reverted to english lately. All I get out of him is a few french words within english sentences. I'm wondering if he's just trying to figure out one language structure over the other for now and I just let it be...or do I insist he speak french to me. I tend to repeat what he's just said but in french. but there's no trying on his part to say things in french. Our community is largely french and I know from watching many households, that kids tend to talk english a lot once they're exposed to media, etc and a lot stay speaking english. So it's not uncommon to see household where both parents are fluent in french but they speak english to their kids as their kids just stuck to english at some point. I really value bilingualism and want my kids to be comfortable in both languages.
Of note, I'm due with second baby in May and will be home with both kids for a year, so he will hear lots more french.
I'm curious to hear from other parents with bilingual households about how their kids evolved language-wise - is it common for them to get stuck on one language at some point and it will settle or is it important to insist on both languages to not just fall into patterns.