history is very content heavy but so is psychology. personally i studied psych with a horrible teacher, so i mostly self studied everything and didnt attend her classes (ended up being the only one who got an A lol cus she kept feeding wrong info to the students and never went with the spec) so honestly, if ur willing to put the work in it and self study, psych may be an easier option if your memory isnt great with dates and names, as altho its got memory, its also got some maths and application. i suggest first you go to both psych and history trs to se if they give good support or not to get an idea + check the specs and see how many papers there are, content etc
hope this helps!