tips for finishing school work

hi !! does anyone have any tips on finishing school work ? i have all together 21 things overdue. each of them takes 1 too 3 hours to complete (for me atleast) the school year is ending in a few days. im getting stressed that im gonna have to redo a grade. the biggest issue is that im getting rlly distracted and scared that ill miss something on the internet, which i dont want to happen. does anyone know how to finish rlly quick ? thank you guys =]