Hey again.
Like I said in my PM's to you about the cutie..
don't be upset with yourself. You love Oliver, and I know you'll do what's right.

And also, try maybe enlisting your vet, or seeing if they have a place you can put a little sign up about Oliver, with his information and a cute paragraph or two (and photo! ) .. because people come in and out of there, and someone might be looking or know someone who is.

And definetely when you see the lil guy on saturday, let him interact with you in front of the people who are adopting, and talk to them about oliver. That way not only can he get some great time with you, but also get a chance at being adopted quickly.