Just lower the backlight setting on the menu, probably labelled "brightness", the most accurate way would be to measure it, but you can look at the TFTcentral site and see what setting would be approx 100 nits, might seem a bit dull at first, but I think it is better with IPS, especially if you are not in a bright room, because of the limited contrast on IPS, at a lower brightness all of the colours will look better, as well as any problems like glow or bleed will be less obvious. Best option on IPS is a low backlight setting and a bias light.