Multilingual dad raising multi-literate children

Do you remember Yoshito from my last post about mother tongues? He's my fellow PEaCH Ambassador and a father who's raising trilingual (for now!) sons. We've recently talked about his family's multilingual journey and his methods of teaching children to read and write in several languages. I had so many questions that we decided to keep it short during the live talk on Instagram but share the rest of Yoshito's answers below. Enjoy!