Learning a language is different from studying math (at least for me), but that is also why languages and mathematics complement each other so well!

I would consider my mathematics learning process as 'quantized', in the sense that one studies and either one understands and learns a new proof or one doesn't understand what is happening and has the impression that one made no progress (even if this is of course not the case!).

Learning a language (for me) is different and I consider it as a 'linear' process. Every minute I study gives me the equivalent of one minute language improvement. This thought is the biggest motivation for me when I study vocabulary in the elevator, public transportation and while waiting for something.

The thing that I had to understand concerning learning languages was: the more one studies the more one improves a language. And the less one studies the less one improves and worst case forgets! 

In mathematics: studying more is not always better, taking breaks, walking and thinking about a mathematical problem, theorem or proof is a very important part of (my) mathematics learning habit.

But: Consistency is key to both languages and mathematics!