I think it's different for everyone, so it's hard to really give advice.
My Dad passed away a few months ago, he had suffered from dementia for several years and had been in a nursing home the last few months of his life. It was so hard to see him go from an active, fun-loving and wonderful Dad to a gray-haired old man who walked with a slow shuffle and couldn't remember much of anything.
The one thing we were spared was him not knowing who we were, thankfully that never happened. Oh, he might not have known my name, but he knew I was his daughter.
The funeral was difficult as I don't really believe in them, but of course went to all of the visitations and the funeral to be supportive of my mother.
Time has begun to heal my heart. I can now think of him without crying, although Father's Day was difficult. I can go to his grave and not cry. I wouldn't want him back the way he was, he had no real life, but I do miss him, and always will.
It will take time, more time for some than others.
