The shed process takes variable time to complete - it tends to get longer as the snake grows and there are some (like the pre-lay shed ) seem to take even longer than average for some reason.
But, as a rule of thumb ( i.e. guess), he shouold shed 2-3 days after his eyes have cleared. Just keep the humidity at around 60-70% and he should be fine.
And they do tend to prefer their own company during the shed as they can't see as well as normal.
dr del