I'm not sure what your family situation is, so my advice might not apply. We are one-parent-one-language. I am a native English speaker, but am fluent in French. My DH is a native French speaker, with very good English and working-knowledge German.
Our kids are required by our country to have a strong French LA component to their schooling. Our kids are bilingual, including high reading levels in both languages (for the 9 and 7 yo).
In all casual conversation, I speak English to my kids, with two exceptions: dinner time when DH is home, and out-in-public-with-friends time, where I feel it's rude to not speak a language our friends understand.
Here's our day:
- Wake up, breakfast, morning chores, etc, all in English.
- 30 min reading baskets for big kids: this contains a mix of English and French books on history, science, math, nature, and a mom-chosen novel in French or Enlgish. During this time, I teach reading, handwriting, and math to 4yo, as well as read her a chapter in an English novel.
- math (in English)- I do make sure kids know their numbers in English, French, and German though.
- Duolingo (English --> German). Kids are required to learn German as a foreign language starting in 3rd grade here. Both my 4th and 2nd grader do duolingo, and also have a 2x/wk tutor.
- English spelling
- French LA - I don't bother doing much with English grammar, except mentioning it as it applies to French grammar. I tend to teach French grammar in English, or perhaps in Franglais. Kids do conjugations, spelling, and dictations, then we do sentence analysis of the dictations.
- writing- about 4x a week in French and 1x a week in English, on a topic from their reading baskets or on a particular writing skill we are developing. Again, I tend to teach in English but their writing is in French.
- handwriting- workbooks in French cursive
- German review workbook (French --> German)
Content topics- all taught in English, but often times with French books as supplements
oh yeah, always an audio book at lunch! Probably 80% English books and 20% French ones.
- DH reads and plays with 2yo with lots of vocab building "first words" books in French.
- DH does a short reading lesson in French with 4yo, then reads/plays with her, in French.
- DH does a short reading lesson with 7yo, usually they just do buddy reading now, and then a short German review.
- DH does a German lesson with 9yo, then reads to him in French.
In the mean time, I get the little ones in bed, then do read alouds with one big kid, then the other.
PHEW, I'm now exhausted! LOL.