Use the tap talk app on your phone if available to upload photos easier.

After sorting through that very long and wordy paragraph, the main thing is 1) your snake only eats live. 2) he refused this week's larger than normal live prey.

First off. Welcome to the forums. Hopefully we can try and give you some advice to calm your nerves about all of this and get your snake on the right path.

First thing to do is make sure you give your snake space and don't handle it too often when it's off of food. Does it primarily stay on the cool or warm side? Whatever you do right now, do not leave a live rat with your snake unattended. This could result in absolute disaster for your snake. I would highly suggest that you feed your snake smaller live meals and follow them up during swallowing with a frozen thawed rat after. Basically feed the live and while it's swallowing the live and almost done. Use some forceps and push the head of a frozen thawed rat Into your snakes mouth immediately behind the live prey item. Once you've done this a few times he will start to accept that frozen thawed food is indeed edible and take to it over time.