I just lost my mother to Parkinson’s. I know it’s not the same type of loss, but the absence hits similarly as I imagine it was difficult to see the decline. Allow yourself to grieve, cherish the memories and celebrate his life. Support has been integral for ,e to get through….therapy as well as friends and family. Do not be afraid to ask for support when you need it. For me, as I am sure it is for you, will never be the same….but you will heal. Remember to take care of yourself as best you can.