help! my ball python is sick

[Bogertophis]

...I would still offer food just in case of you have another snake you can drop the food to if this one still refuses....

I don't think it's a good idea to re-offer food to another snake once it has been exposed to a snake that isn't healthy. Even with apparently healthy snakes it's
not the best practice or without risks; I hate to waste food too, but in this case I would.