you can either get lapping films, or a barbers hone, or a chinese 12k
I was sharpening razors using a DMT EE 8k and 0.5u CrOx. Now I prefer to use the DMT followed by a barber hone (80% of the time), Thuringian, or Spyderco UF.
2k to 0.5u is a pretty big jump.