Looking at your previous posts, the hole is in the wall. He could be anywhere in the house by now, so don't expect him to reappear out of that particular hole. He'll have gone looking for food and water or warmth.
One of mine escaped (an adult) and turned up alive seven months later - in the saucepan cupboard of the flat downstairs. Inside a cavity wall, they can drink condensation, eat insects (at a pinch) and find nice warm water/heating pipes or cool damp areas to keep them at the right temperature. That's really the only comfort I can offer - sorry.