Kara Goldfinch on Nostr: Language nerds: I need to come up with a system to help me retain the Dutch I'm ...

Language nerds:
I need to come up with a system to help me retain the Dutch I'm learning. I love learning new vocab and whatnot with Babbel and things, but I don't want what I've already learnt to leak out like a sieve.
So what would you recommend I do?