Well, it's hard to know exactly the setup you have for the animal's environment, but first off,.....they MUST feel safe and secure to get an optimum feeding response. Hatchlings actually do much better in smaller containers than many would think, otherwise they often cruise around the cage feeling insecure and also never are able to find their meals.
Start off by housing the animal in a very small(secure)plastic shoe box with a couple small cozy hide boxes,.....these can be fashioned from small plastic cups(solid colored) etc... with a small notch cut in the lip for an entrance way. Put a few of these at different spots,...and make sure one is at cooler side, and one is at the warmer side.
Next, you need to address a comfortable temperature for the animal. This is best done from an UNDERNEATH heating source, such as heating tape, or heating pad set under only HALF of the container. It is EXTREMELY important that you have an accurate thermometer down at the bottom of the substrate to measure the temp, as guessing does NOT "cut it" at all. A good temp for the "hot" end would be in the upper 80's.
Have you offered both live and dead pinkies to see if it will go for one, or the other?......sometimes a few individuals prefer the live, moving pinkie over the dead one, and many times vice versa as well. Offer one of these types of meals to the snake just before going to bed at night, this way, it won't be distracted by people walking about. And also the fact that many have nocturnal feeding habits by nature.
Place the meal directly in the "notch" opening of the hide box,.....I usually put half the animal in the hide to make sure the snake knows it's there, and it is "forced" to crawl past it if the snake decides to leave the "hide".
See if these things trigger a feeding response, and then go from there..........hope this helped.
best regards, ~Doug
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"Better to be silent and thought a fool, than to open mouth and remove any doubt!"