Harder major I want or easier major to keep scholarships

I am a future economics major but I am going to school on an academic scholarship. I have to have at least a 3.5 gpa to keep my scholarships but I do not want to get lower than a 3.6. My other option is to become an international relations major. I think the IR major would be easier for me, but I want a degree in economics and to eventually maybe go to graduate school. I am ok at math but I don’t want to make a mistake by choosing economics and possibly losing my scholarships because I underestimated the difficulty of the major. Any advice?