Slowing Down

I'm studying for the Jan test and I often find myself reviewing answers which leads to me being super frustrated when I see that it's often just a silly mistake that kept me from getting the answer right. It seems that my anxiety gets the best of me and I really am struggling to slow down! I ALWAYS have extra time on every section (especially LR and RC). I am averaging -4 on each of these sections, but the questions I'm missing are typically easier. Does anyone have a similar problem or have any tips for slowing down?