Bathing him every day to every few days would help. Make sure the water isn't too hot, lukewarm is best, an easy way to judge is to put the back of your hand on the surface of the water if you don't have a thermometer at the ready. Also, for safety reasons make sure the water isn't higher than your beardie's ankles or elbows/knees at the most. Hopefully your beardie is comfortable around you, because some get a little crazy in the
bath :lol:
As far as helping him shed goes; don't peel any of the shed off for him. It can damage the scales underneath. The best thing to do is give him baths and you can gently rub any stuck shed with a soft bristled tooth brush. A lot of bearded dragons get moody when they shed too, so if he's grumpy don't take it personally lol.
Hope that helps