Exams in History BA Honours

I’m just looking for some friendly advice! I’ve had a situation where I originally picked to do Psychology at university but have now changed my mind. I’m thinking about doing history and I want to know what the exams are like. Are they easier than A Level? How difficult are the exams? Are they easy to prepare for? Exams have never been a strong point for me so I want to sure that it won’t cause too much stress before I pick it. Any tips will be much appreciated!
Thanks