Sounds right. Dehydration is the biggest cause for bad sheds. I mean stuff like stress, low humidity and illness can cause bad sheds too but dehydration is the most common cause.
The dented eyecap should be fine once he has his next shed assuming you get him well hydrated.
I would inject his FT food with a decent amount of water to 'jump start' the intake. I inject Pat's little FT fuzzy mice with about 50-60 units of water. He drinks from a dish as well but this is like insurance. He has had perfect one piece sheds and is nice an filled out.
Oh and also, this is why with every shed for everyone, i always check for 2 eye caps and the end of the tail is off. Those are the 2 most important parts.