I need advice...

So I started at my sixth form college almost a week ago and I'm enjoying it. I'm currently studying mechanical maths, physics, psychology and art... but I hate art. It is completely different from GCSE and we have no freedom; we're told what to do and how to do it which I really don't like. Art was one of my favourite subjects at GCSE (I got an A*) but now I really, really hate it and don't want to do it anymore. I was thinking about changing it to geography because I also loved geography at GCSE (again, I got an A*). Geography would be a considerably harder A level than art because geography involves a lot more writing than art... so I don't know what to do. I do enjoy art however the work load will be a bit overwhelming. By changing subjects I run the risk of having to change my maths, physics and psychology classes (which I really don't want to do because I love the people in my class and the teachers I have). There's one girl in my psychology, physics and maths class who, when I have art, has geography... so do I change art for geography and pray I stay in the same classes for my other subjects? I need help ASAP!!!!