During shed humidity should be btwn 60-70% I believe. And as for feeding its just common that most snakes won't eat during their shed, however some due. Its also common for them to stop eating a few days to a few weeks before a shed. I know when I first got my lil buddy he didn't eat and about two weeks later I had a nicely shed boy. And its not suggested that you handle him if he indeed is shedding (starting once you see his eyes start to cloud up) as they get easily stressed due to their reduced vision.