I think it would be a good idea, and really interesting. I don’t think it would be harder than any other subject. Sometimes science is hard work, but then you learn some really amazing stuff and that makes it worthwhile.
I think so long as you enjoy what your doing it doesn’t matter. If you want to be good at anything is is going to hard work whether that’s science or sport. Also just because you choose to do it doesn’t mean that’s what you have to do forever.
A lot of my friends from uni did science and are now working in a whole variety of careers!