peffer Karo light syrup not sugar water. If you don't have it on hand ask a neighbor, most people have it on a shelf and it keeps forever. Sugar water - as I said has it's hazards.
GIving sugar water diarrhea and pasting to a weak already chick would not be a kindness.
Peffer - is the hatch finished? Is he in a brooder or the incubator still? Is he dry now?
If your hatch is finished, or he's in the brooder already, I'd get/find/buy karo light syrup and give him a couple of drops and then let him rest again. It could be simple exhaustion, in which case Karo...