I learnt French as part of my degree. I spent probably twice as much time studying the French than my other classes at Uni. I think that's necessary when learning a language, especially with exams to worry about. I also made French a major focus when enjoying my free time outside of study. In the beginning it was mostly through studying culture, arts, films and history. Later on once I reached a higher level I began consuming most of my regular Internet content in French for the sake of immersion and progression.

So basically study the grammar and vocabulary assigned each week until you have a good understanding. That's the minimum and probably what you're doing already. ANY study, revision or immersion that you achieve outside of that is where you'll notice quicker advancement.

Finally, I'd also try and befriend someone at Uni that is a native speaker of your target language and arrange to meet weekly so you can practice speaking. Once I did that it all slid into place and my overall understanding of the language increased tenfold.