Little Pim is on Totsy
we have the Japanese one and i really like it. it’s only 3 DVDs but it’s a full immersion and is pretty good as far as i can tell. i like that it captures Roger’s attention and he loves the little musical interludes. if you have zero knowledge of a language you may have to watch them a few time to figure out the minor details, or maybe even google a few phrases, but you’ll get the gist of it for sure and your kid will get what they need out of it. so far my child doesn’t speak Japanese but he doesn’t speak English either so i have no solid proof of anything for you.
but it’s definitely helped me use more words that are at his level.
so far i’d recommend these series(es?)!