First off your plant isn't dying its just a little sick. Secondly its sick because it has some kind of deficiency but what kind I will leave to more knowledgeable posters to diagnose. From the look of things though you have a nute lock out in your medium (its soil?), so your first step I believe is to flush your pot thoroughly with distilled water to get rid of any built up ferts, then after you've given the soil some time to dry out start feeding again with a good growth fert at 1/4 strength and see if that helps any.