I would soak him in a luke warm bath in the sink, use reptisafe in the water or whatever you have as a water conditioner.
Soak him in a few inches of water for around 10-15 mintues then ever so gently you can try to massage the dead skin off of his body. I would repeat this process maybe when you return on tuesday if the shed remains. But getting him his heat with proper bulbs and the right diet are going to be the big things right now.
If you've done your research you should know what kind of bulbs you need and what temps to keep him at. As well as a proper diet.
I hope this helps, keep us updated.