20 minutes a day: Is focusing on listening or speaking better for Taiwanese Mandarin?

I have an extremely busy professional schedule and I only get about 20 minutes of dedicated study time each day. Given the specific accent and unique colloquialisms of Taiwanese Mandarin, should I prioritize listening to local news or focus on speaking drills? I'm worried that without enough output, my progress will stall. Would an automated workflow via Chickytutor.com be effective for such a short window?