PM time management (help pls)

I might fail this PM because of poor time management and it will be the third time, i missed out an entire commentary section worth 7 marks and 2 mcqs that i left to do later (11marks in total)

what do I do with time management? I had 1 hour 40 minutes to do both crqs and when I was done with the first CRQ, I had only 29 minutes to complete the last one, i am kinda heartbroken because I wanted to attempt the entire exam, lets say that to secure 3 numbers from that commentary was a piece of cake because it required me to make 3 zero based budgets in part A and 7 marks in part b for it, the commentary that I left

If i rush through crqs, im afraid ill make stupid mistakes, I am not good at excel specially the one thats provided in exam, it doesnt even copy/paste properly but I dont use excel in real life nor my work involves using it unless im promoted, its really sad that I had 1 hr 40 minutes for the last 40 marks and I still managed to mess it up for my self, now thinking about going through the same subject sounds like insanity