I am not sure that this is going to help with the chedar, but I had a provolone crack through uneven drying, and I wiped it over with some olive oil, and turned it over so that the crack was on the bottom for a couple of days. Healed up beautifully. Did the oil rub about three times, and allowed a natural rind to form.
What I found with my chedar, was that then I waxed it, the wax ran into all the cracks, and when opened, you had wax veins all through the cheese. Not a good look. So was wondering whether the oil rub might be worth trying and see if the cracks close up a bit before waxing?