How fantastic! They are very tolerant animals, I would just keep some dried food and water out, he will appreciate that if he wakes up. Great you are going to build an outdoor nest too, ive built two boxes for the garden, they can house a few hogs at once, I also have cams on them to watch their antics through the night. They need all the help we can give, so I applaud you for the help you are giving.
