Don’t cry! All is not lost. And if they’re chewing, that’s good. They’re absorbing the yolk sack. They aren’t ready to hatch yet and you can get some shut eye before they decide to make an entrance.
Seconding what Rose Quartz said. Coconut oil on the inner membranes. I’d let them sit until morning. Really truly. Or set an alarm for in a few hours and evaluate then. But sit. On. Your. Hands. No touchy.
If you absolutely cannot sit on your hands, instead of breaking them out, consider...