Offer the minced boiled egg, and watch carefully as the chick eats. Usually, a chick will poop soon after it eats something. If it strains while squatting and especially if it chirps loudly as it squats, you will need to get some oil into it ASAP.
I use slightly chilled coconut oil since it is easy to stuff a half a teaspoon into its beak by breaking up tiny pieces of the oil. But mineral oil or olive oil will work, too. Be sure to get at least half a teaspoon into the chick.
The Poultry Nutri-drench is also essential as it is formulated to go directly into the blood stream without needing to be processed through the liver, which likely isn't doing a terribly great job since it may not be fully developed.