help someone pls

im an alevels student trying for biotech.. i tried giving the net 1 and 2 and it was honestly horrid- i barely knew anything and it was literally all tukkay.. i got around 90/100 in both the nets.. im not giving the net 3 bcs i have mocks and exams coming up for a2 but i really wanna give net 4.. i have no time to ratta all the fsc books and i need around 140 marks in my net

wtf am i supposed to do