Short & crisp answer :
Procrastinating. Inconsistency. Daydreaming.
Okay hear me out,
If you don’t like a particular subject please don’t leave it for tomorrow, there are maximum chances that you will keep procrastinating it and there will be hell a lot of backlog and you’ll be just sitting there wondering how to cover all the syllabus. Instead, just start with a simpler topic but atleast start.
Maintain consistency in your studying pattern so that no subject no subtopics are left. Keep doing multiple revisions.
Also, please for god sake stop day dreaming what it would be like to get into a medical college, how your life would change drastically after neet ppr. Focus on the present.