"How do you learn to let go?"

I just came back from the vet.

Joy has been diagnosed with kidney failure,
And only 20% of his kidneys are still functioning.
If you think that it sounds bad,
Well, it IS bad.

I know that he's very old,
(80 or 90 years old, if you translate it into human years)
But that doesn't mean that it's not going to hurt.

I couldn't sleep last night,
Worried that we might lose him any moment.

He was barely conscious of my presence just now.

What would you do?

Let him go,
Or pray for a miracle?