Sometimes you have to assist feed hatchlings till they begin eating on their own. Grab them behind their jaw shove a pinkie halfway down their throat and they should do the rest. Sometimes it Takes a couple times and some patience but eventually they will get the point. If they spit it out 3 times I usually just try again in a few days. It sounds barbaric but if you really care about not losing your hatchling it's what needs to be done. Welcome to balls haha.