shed and humidity questions

[lucky8926]

I think my new bp is about to shed. His eyes have a slight "cloudy" look. This is my first snake so I really don't have anything to reference to. The humidity is around 47% which when i asked before everyone said it was fine but when he sheds to raise the humidity. What is the preferred humidity during a shed? I have a big water dish. His enclosure is a 29 gal tank sitting on it's side and I made a sliding plexiglass front to keep heat/humidity in but I haven't seen the humidity go above 52% I did a search for humidity but couldn't come up with much.