I don't think it's that much
Weekdays are my daily routine. I wake up, go to school, study, come home, study, go to the academy, and study again. It's tomorrow.
So I don't think I have much time because I'm alone

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I don't think I have that much time.
On weekdays, I follow the same routine every day. I wake up, go to school, study, come home, study again, go to the academy, and study more. Then the same thing happens the next day.
So, I don’t think I have much free time—especially since I manage everything on my own.