1-A) I study math at school.
1-B) I am studying math at school.
Can I use 1-B when I am not studying math at the moment I am speaking? In my understanding, I use 1-B if the math course is temporary and I will stop studying it after finishing the course. Is it correct?
2-A) I wake up at five these days.
2-B) I am waking up at five these days.
My understanding is that I use 2-B if the habit of waking up early lasts for a short period of time, because I have morning practice for the coming competition, for example, and that I will not wake up at five once the competition is over.
Is my understanding correct?