Am I deluded or growing?

Hi writters , I am 15M and likes reading phycology books and literature. From past two years I had worked on lot of ideas , jumping from one to another. On my 12th attempt, I was able to complete 7 chapters but I didn't give up . I decided to sharp my skills by writing short stories. I picked an idea but latter, I made a full fleched novella. It's about person who fake memory lose to revenge mafia but I don't like that heroic stuff . I have made it dark . His revenge don't come cleanly. He died in part 2. Forgot except by a girl whom he saved by mistake. I make every conversation manuplative. Added many unexpected things. Everything was going well ( too well I must say ) but now I am not able to work on second draft because my first draft length is 60 pages only and I have no fluff in my draft. I don't want to add fluff but length is too short. I am getting a lot of stress by it. On top it My exams are starting in a week. What should I do ?