You should really give tong feeding a try, it 'll make feeding a whole lot easier in the long run. Wiggle it in front of his mouth or gently rub it against it, he will bite after while, you might have to repeat this a couple of times (subsequent feeding sessions).

It's really not unusual for them to not eat a couple of days after being introduced to their new habitat, my last caatinga didn't eat for 5 or 6 days, now he devours nightcrawlers and red runners.