I study two launguages now, French and German. And I make it a rule to spare two hours for them. I beleive in the words of a man who is said to have a command of several languages that if you want to learn a foreign language, follow these rules: study it for at least an hour every day; pronounce it; and if you write something in the language, have it checked by a native speaker. Hence the rule.
But I have a part time job teacing English. This takes much of my time, though it is necessary to save up for school expence.
As a result, the two languages and the part time job leave me limited amount of time for my major, which is what I am supposed to take the most time for.