HELP, Wrong Soil

We used Schultz soil but it has time release nutrients in it. ( newbie error). We have beautiful Northern Light plants but the soil holds too much water and if we use nutrients they get nute burn. Is there any way to compensate for the time release?
ph around 6..

imo change your soil prenuted sux. to easy to over fertilize(releases with every watering) foxfarm and botanicare both make good soil mediums. good luck!