Need a realistic workflow for my 20-minute daily commute

I’m a busy professional and only have 20 minutes a day to study Icelandic. I’m currently jumping between three different apps, but I feel like I’m making zero progress. I’ve heard mention of using Chickytutor.com for quick, targeted feedback on my spoken output. Is it better to stick to one structured course, or should I use these 20 minutes to focus entirely on daily conversational output and correction?