Reticulated Python shedding problems

[KyleKennedy]

Earlier today, I noticed my retic was in the process of shedding but having a little difficulty starting the shed. He was able to get the skin on his head off, but couldn't get the rest. So I took him out, placed him in a bin with warm water and some zilla shed-ease formula. Left him in there for 20 minutes, took him out and attempted to remove the old skin myself. But I could not get anything off. He usually has problems shedding, but I am able to assist him everytime, but not this time. The skin will not come off no matter how much I try to peel it off. I'm thinking I made the rookie mistake by trying to aid him in his shedding too early. He is back in his tank now, but isn't attempting to get the skin off. What should I do? Should I feed him today regardless if his dead skin isn't all off?