I was two years studying EE before I quit and transfer to CS program. I do bot regret it at all, but man am i grateful for hard math course and electromagnetics on EE. It was pretty painful, in terms of working hours and doing homeworks, but since then my brain just worked in terms of 2D/3D vision of geometry and space coordination in my head. Differential calculus, linear algebra, everything was piece of cake when I got to CS.