Uh I think you should check out the H2 mathematics syllabus and H2 history syllabus because H1 history and H2 history teaches almost the same thing but H1 test less only. H1 mathematcs is only really half of what H2 mathematics with easier questions lmao.
Up to you imo
You’re better off taking H1 Maths imo unless you have a fairly solid AMaths background. I got A2 for EMaths, negligible Amaths background, and I’m still struggling with H1 Maths.