It’s so cold now that any soil function is likely grinding to a halt. We’re about at the point where you just got what you got. I’d wait until spring to add any more fert. Sometimes in mid-March the soil is gonna start warming back up and the soil cycle will begin turning a little faster once again. That’s when I’d look to start adding any more fert. It would probably be a good idea in your situation to go ahead and add a little N,P, K (all three) sometimes around late March-early April.