A rack system, with dimmed heat cable under the back of the shoe boxes, is ideal for whole clutches. After the initial shed, the substrate can be changed to paper. Rarely you may get a clutch where all, or most babies will eat at the first trial. In recent years I have had much better success in feeding trials by day than at night. Perhaps at night their senses are on full alert and hatchlings in particular tend to be very defensive.
Specimens are less on guard.
Try anchoring and elevating the perch, preventing it from spinning around when the baby strikes, and enabling the animal to hang by its prehensile tail unobstructed by the floor while constricting and eating. Eliciting a strike constrict response is the goal. If the baby has the prey by the head, and has it in a constriction coil, it will usually instinctively start the lock-on jaw walking motion. Move away slowly, and repeat with re-warmed food until the animal eats. The sooner the babies eat, the better.