To give him some energy you can soak him luke warm de-chlorinated water with 3 drops of honey disolved in it. Makes sure the water is only up to his chin. You can also try pedialite(unflavored formula) at a 10 to 1 ratio. 10 parts water 1part pedialite. So for every 10 ounces of water add one ounce of pedialite. This must also be in luke warm de-chlorinated water. Food items to be fed to him should be no larger than the distance between his eyes. He is weak and won't be able to swallow anything larger. He may choke to death if the food item is larger.