Not gonna lie, it is difficult. However, like any subject if you put the time and effort into it, it'll pay off. I also just switched to History and I've missed around 10-15 hours of course content. I sadly didn't hit the required grade for History at A-level in my school, so after a long, long time they settled with putting me on the course. I wish I took my GCSEs more seriously... The saddest part is that I was capable of achieving such high grades in GCSEs, but I decided to slack throughout Y10-11. Let this be a lesson to all Y10s and 11s lol.