For me when I was in school I set myself rewards for completing homework and studying tasks. I split my subjects into the ones I liked and the ones I didn't. I started and finished on one that I liked and made sure I did the one I struggled with most second.
I would work in 1 - 1.5 hour stints. I rewarded myself with 1 chapter of 19-25 page manga. A 40 page one at the end or after a particularly hard task (unless I felt that I was in the swing of it and felt like I could get everything done if I powered through).
You can also use events and releases of things you are looking forward to as motivation.
Also you might try looking into study techniques and you might find one that suits you.
I have a really bad procrastination problem as well, but completing hw and such before or right as it is assigned is usually how I get motivation to do it, because then I’m in a “homework mood”
If i miss an assignment I wake up an hour or two earlier before school and finish them in that time. I usually don’t have the willpower to do things in the afternoon at all but it really depends on the person
I need to complete hw and other tasks but I just can’t seem to bring myself to do it and constantly advoiding them until the very last minute where I abosolutely need to complete it. It’s been affecting my grades and my sleep schedule now as it has gotten worse. Idk what to do anymore 。゚(゚´ω`゚)゚。 How does one obtain the will power and motivation to complete such menial tasks?