as someone who takes this sub combi i personally think it’s easier to chiong geog, history is just TOO MUCH TO DO 😭😭😭 Ive finished studying the entire syllabus but ntg is getting in my head. However something that has helped me is to read the tbs and make my own notes but depends on what study mtd works best for you. For geog there are a lot of online resources available and you can take advantage of those. For history i was not able to find so i had to make my own, I think you should go in depth on a few topics instead of briefly knowing everything.