As 'loopy' as he is right now, just being there and saying "dad, I love you," will
'make peace.' He will hear you.
Since he is a diabetic, I would suspect that with his fluctuating blood sugar readings
is why the surgery keeps getting rescheduled. I am diabetic and have had similar
happen to me.
Ask your HP to watch over your dad and then go be with him. That is the best way
to 'make peace.'
Also know that you are not in this alone. We here at SR are walking with you in
spirit.
Love and hugs,