SOPP524: I can still play but things feel different. I have reduced feeling in my fingers

This question was sent by Mark. And he writes: Hello I am 63 years old and have had a stroke on my left side. I fell and banged my head and had a further brain injury. I can still play but things feel different. I have reduced feeling in my fingers. I am trying to retrain myself. My muscle memory is just not there. My sight reading is much harder. I have a Rodgers organ at home so I have no trouble practicing. I sometimes feel like I am beating a dead horse. I have Hauptwerk and can play a nice Father Willis organ with it. Any suggestions for something I could do?