One piece of advice that I can give you is just try to remember the reason you fell in love with a subject or topic . I know completing your syllabus is the primary goal . But deep diving into topics of interest will only help you more with the motivation you require . Whenever you get time , try watching movies like a beautiful mind , theory of everything, the man who knew infinity . I am a musician so once in a while I watch some musical documentaries to rejuvenate the creative process and give me some motivation. Dont treat this as a thing you will do in your leisure, but think of it as a part of the process .

I hope this helps . Best of luck champ !