Create a mobile responsive image with image map fields

We have an image that has mapped pop ups on it. We have created that already. We need to make the image mobile-responsive. Because of the size of the image we know it won't be able to be fully responsive, but we would like to set a min and max size and if the screen size gets less than that, it will just necessitate a scroll. We are using a plugin to automatically remap the fields when the image is resigned, but it is not working. We need to have someone make that work. The image is currently 1300px now, would set the min as 700 (a guess). A copy of the image is provided, and we can provide access to the work we have already done if awarded.