How long did the process of skin coming off did the previous shed take?

They start shedding from the tip of their snout, by the way, by rubbing their lip until that skin breaks free first. For a 'good shed' the entire process from the first scale on their lip lifting up to the last scale coming off the tip of the tail only takes about an hour. With a bad shed, one of the problem areas you want to look at is whether or not all of the skin between the vent and the tip of the tail is removed. If left too long, it can shrink and 'choke' the tail.

I would not advise attempting to remove eye caps unless you are certain that there are more than 1 or 2 there, at which point a vet visit is much more appropriate that removing them yourself.

I support the humid hide idea. I had perfect sheds all winter at 40% ambient humidity simply by adding a tupperware full of sphagnum moss with a hole in it to the enclosure half way over the heat pad when their belly turned pink and removing it when the shed was done.