CALM DOWN! A shed process can take as long as two weeks. Your snake will not starve if it has to wait till even next Thursday or later!!! DON'T FEED and
STOP handling the snake! Just make sure you mist him lightly every day with some lukewarm water from a spray bottle. Otherwise leave him alone!
If his eyes are silvery it will probably take at least another 4-6 days before it sheds, so you'll have to hold out a while longer.

Snakes will shed on their own schedule, so that's a very rough estimate.
The snake will first look nice and clear and shiny... don't be fooled: if you don't see a shed skin, he hasn't done it yet, but will soon. DON'T handle or feed until you see the old skin lying in the tank.
Until then, it's wait, wait, wait.......!!