Anyone successfully passed on two languages from one parent?j

Hi! I’m a native Mandarin and German speaker, my husband is British (English only), and we live as expats in the Middle East. Expecting our first baby and hoping to raise them trilingual ❤️

English exposure is covered (dad + school later), but how can I pass on BOTH Mandarin and German from one parent without confusing the child?

OPOL doesn’t work for us. Has anyone done two languages from one parent successfully? Tips or methods that worked?

Thank you!