I have been studying french with ds13 off and on for about a year, after deciding that his first pick, Japanese, was a bit TOO much of a challenge for us. I have ok french skills and zero Japanese experience.
I will introduce vocab in the car, while eating, etc. And do lessons on conjugation, etc. more formally.
Some silliness~
My dd7 just started voice lessons and the instructor is classically trained and suggested a french art song; at first I was like...uh she doesn't know ANY french, she's 7! But I just decided, well we'll see how it goes. We spent a bit of time the first week going over pronunciation of just the lines in the song, and towards the end, she was like, 'wait - is this song IN FRENCH??'. Lol, a little freaked out.
I said she should just keep trying and that the teacher thought she could do it so who was I to say no. (In truth I rarely see this 7 year old fail at anything).
3 lessons in, the fear is gone, she's just enjoying learning the song.
Add to that we are thinking of visiting a french speaking city soon, and both kids are picking up the french-english dictionaire and quizzing me on all kinds of words I can and can't recall; they are pretty surprised when I get a hard one right.
It is at least a good time.
