Re: should i help or wait ?
Here is a great thread on helping with a bad shed Bad shed No problem .
If you are having problems keeping up your humidity and you see that your snake is about to shed try using a humid hide until it sheds. Use a hide sized Tupperware container and cut a hole, either in the side or top, and place some damp sphagnum moss in it. Then place the humid hide on the warm side of your enclosure.
Re: should i help or wait ?
Just soak it in warm water. make sure the water is only about a third as deep as the snake is tall. let it slither around for a while and you can either do as I do and take it off by hand or let the snake slither through a towel normally this works. or you can throw them back into the tub/tank and let them figure it out.