Cutting springs (I know it’s a bad idea)

I would like to lower my rear a little bit more, and it's not a standard spring over shock but they are separate. Rn I have just a lowering springs installed and they are a little bit too high. Theoretically if I would cut springs is it better to cut one coil from already lowered spring or just send it and cut the OEM in half for example? This is a comparison of stock and lowering spring