Most people have their best productivity in the early mornings, while some work late at night. It depends on what works for you. My time for reading, which is usually in the early mornings, I noticed I was easily understanding more and my brain heightens at those hours, but it is so pathetic that is the time when I feel like sleeping more.
It takes lots of courage to handle them, and as time passes, I begin to source solutions, studying myself very well to see if there are times I could switch my studies so I could have the fullness of those early morning sleeps. I became a night owl; instead of studying early in the morning, I took it at night and slept off within 2 a.m. I guess I'm good that way.
Image taken by me