I am sorry but this is just so wrong.
That tort has been plucked from what would have been a wonderful life compared to replying on what you can provide. S/he should have been n left in peace to go about their business.
Hermanns are a critically endangered species, protected by Cities, so you have also broken the law.
I would give it a good soak to hydrate it & replace it somewhere safe in the area you picked it up
