It's always sad to realize our parents often become
frail and ill as they age.
Now that I too am old....72
I get peeved with what is natually happening with my health.
For me...my alcoholism did not permanetly do damage
it's just that I am wearing out my body and brain.
My parents and grandparents ...non drinkers...did the same
Blessings to you and your Dad
May you both find peace with this situation
.