All I aim to do every day is expose myself a little to my different languages. I do that at the speed of listening. If I just read (unless I’m really ‘up to speed’ in a language e.g. Dutch) it is just too slow and stressful e.g. Secret Seven books translated into Japanese.
That is why the experts (Paul Nation?) advise you not to read books with more than 5% unknown words.
Listening, I cover a lot of ground in a relaxed state. I can skim over even 99% unknown! However, it has taken me this month to learn how.