Capt,

You said it in your post... take it one day at a time.
I lost my dad 12 years ago and my Mom six years- jeez has it been that long.
Both were a long, hard to watch, painful process of slow degradation due to dementia.
My mom lasted a long time, my sisters and I took care of her for as long as we could but we finally made the heart wrenching decisions to put her in a home.
There we continued to watch the slow decline, till she no longer recognized any of us.
While her body was there, we all knew mom was already gone.

Very sorry for your loss.