I have used Anki a lot to learn Japanese. I think that the principle is not that great for languages. It helped me to remember the vocabulary and the kanji, but it only help me to acquire visual memory. When I hear Japanese, I am way too slow to make the relationship between the Japanese word and the associated concept. What comes to my mind first is the French word (my native language) and now I feel like I am learning the same vocabulary again (and the fact that Japanese has a lot of homophones does not help). Having sentences cards and audio cards helped, but that is barely enough.

My advice would be not to rely too much on Anki. I considered it as a silver bullet because it was so much better that using a notebook (like I did in my childhood), that was a mistake. Find other way to practice. Take lessons (maybe one day I'll try these Skype conversion offers), read articles, watch tv show with subtitles, find people you cant talk to…