Congratulations on your toad. We have one in our cellar (which used to have a coal ‘hole’ so guess toad got in through the street-level hatch that would once have been where the coal got delivered). We leave the toad in peace and he seems perfectly fine. DH feeds him the odd slug, or other garden-unfriendly beastie, from time to time
We have had various resident toads for years - one old chap used to potter about and follow DH when he was working in the cellar. They can survive without apparent harm for a long time with no obvious source of food. We think ours deals with the woodlice and other small insects.
I am jealous of all your toads. I garden organically, dug a pond, made a toad house at a pottery club and have only ever had frogs and newts. Maybe I need a coal house. I love their eyes and remember them as a girl but since moving I have never seen one or hedgehogs in our garden 😕