Late night person

Lang-8にて、英作文の添削をしていただきました。

I've studied for an exam for two months.
Of course, I studied last silver week.

When there is a long weekend, I can't get up early.
So I overslept every day of the silver week.
Since I started studying in the afternoon, I needed to study late in the night.
As a result, I've become a late night person.

It's been almost a week since the silver week ended, but I'm still a late night person.
I'm sleepy while I'm working, so I want to become a morning person back.
But I'm staying up late tonight too.

Anyway, I'll go to bed soon.
Good night.