I have a related worry, though from the other side of things. Kiddo doesn’t get out much b/c of the virus and also limited days at hoikuen, so he doesn’t get as much Japanese exposure as I’d like him to. Our plan initially was to speak Japanese outside the home, and English inside the home, but that was in the Before Times lol. Now, we basically speak English to him most of the time, with some Japanese when we do go out, and I’m worried he will be too behind in Japanese when he eventually goes to school.
Also, he’s still babbling and not really using words in any language, so I’m worried that we’re doing the two language teaching bad, and that he’s gonna have issues speaking >_< He does seem to understand a fair bit of English and some Japanese at least though.