I increase humidity as soon as I notice Khaa going into shed. Sometimes I notice right when he gets dull and sometimes I don't even notice until he's in blue. Some might say that's a little late but when I increase his humidity for shedding, his humidity almost hits 100%(in his humid hide), around 80% throughout his enclosure. I've had no problems whatsoever, never had an incomplete shed from him.

Increase whenever you notice signs of shedding process.