I quit for JEE25. Day 2 (tips needed)

Today I need some tips mates. 1. Am I normal? Today, I woke up at 6 a.m. I thought I will complete the whole matrices and determinants chapter today. I have been grinding since 6 am till now (leaving 2 hours of daily chores). But I didn't even complete 3/4th of Matrices only, leave about determinants. Am I normal? If not how can I study more in a given period of time? 2. Even though I sat on my desk for 11+ hours. I could focus only for the above time. My focus is completely distorted because of scrolling for 12+ hours daily for past 2 years. How can I regain it? My brain wants a break for every 10 mins because it used to get dopamine hit every minute till yesterday. For remaining time today, I'll just revise what I read yesterday and today, practice few questions and make shortnotes. And for the one who recommended me ypt app in my dm. Thank you sm. I'll use it from tomorrow. That's a great app. (I mistakenly hidden your chat cuz, I don't know it deletes forever