I don't know whether I should laugh at that comment.
Of course I'm not calling you dumb. XD I was just trying to say that since you only have 13 days left, it's going to have to be possible bc there is no other alternative and therefore you are capable of achieving it in that time. I.E. I was attempting to provide support/motivation/something/whatnot/idek tbh.
Don't be scared to complete past papers bc you're worried of achieving a low grade. If you make mistakes then you learn from them and you'll know where your weaknesses lie which you can sort out before you complete another one.
Glad to hear you're working hard though!