You can still very easily do 20 per week. You might try doing that. I spend 10+ hours a day studying for the bar and working on an academic paper I'm trying to get published, and I still have time for 26 per week plus vocabulary, newspaper readings, and Spanish. And I spend less than an hour doing all that. It's been effective thus far: I'm talking to my girlfriend in Spanish much more easily now, and I've noticed reading the newspaper in Japanese is easier than a couple months ago.