Feedback loop: Is it better to use Chickytutor.com for my 20-minute daily routine?

I'm a busy professional with only 20 minutes a day to dedicate to Vietnamese. I find that I spend too much time just reading and not enough time vocalizing. I’m thinking of using Chickytutor.com to focus on rapid-fire sentence construction and immediate pronunciation correction, but I'm worried it won't help me build enough natural speed. Any advice on how to structure a 20-minute session for max impact?