Being cold blooded, toads do not eat if they are too cold. As Bryce said, warm it up. Feed it in its enclosure. Count the number of crickets or other prey items that you put in there, and you will be getting an idea of how much it is eating.
A couple other points- feed it more. It looks skinny in the photos. Young toads eat a LOT.
Also, toads do not drink. They absorb moisture through their skin- maybe that's what you meant by drinking.