As I always say about duolingo, if you have not completed the course in 3 months you won't learn a language with it. Duolingo is a good introduction when you don't know anything about a language, but you need a lot of advanced materials they they don't really have to become fluent.
Though if your goal is just to play a game and feel like you are learning something - well at least you get some vocabulary. It won't teach you a language but that need not be your goal.