I just switched back to French in Duolingo, because I think I need the listening practice, and maybe even some pronunciation practice. I'm not sure how well this will work: I think I literally can't hear some of the distinctions between slightly different phonemes. But it can't hurt. I am going back to much earlier in the course, around lesson 32. I had finished lesson 78, I think, when I switched to German a few months ago.
In German I've been picking up vocabulary, and along the way noting where the German and English words for something are the same, or almost the same, plus some words I know from Yiddish. I don't speak Yiddish, but there are bits in New York English, and some of the syntax is familiar, possibly from my maternal grandparents (who were native speakers of German and didn't learn English until they were in their forties.
In German I've been picking up vocabulary, and along the way noting where the German and English words for something are the same, or almost the same, plus some words I know from Yiddish. I don't speak Yiddish, but there are bits in New York English, and some of the syntax is familiar, possibly from my maternal grandparents (who were native speakers of German and didn't learn English until they were in their forties.