I use .25 Diamond as a refreshing paste, not finishing.
You can calm a Diamond edge down with Chrome and Cerium Oxides, or linen and leather or the best, .50 or .125 CBN.
Cerium and CBN are the best finishing paste I have found and can be used daily for maintenance, with Diamond used once a week or as needed if the edge begins to flag.
Diamond to sharpen, CBN, Cerium and linen for smoothness.