I understand your want to handle, but you must leave it be. If you keep handling it may never eat. My pinstripe made a whistle last night and I had to check his mouth for mucus, now he seems stressed and will probably not eat tonight for me. If the snake is still new id give him a while of minimal handling (just to clean cage, change water, etc.) and then after he has shed or eaten, begin to handle but only once a week. And don't handle after you feed him because he may spit the food out.
It can take up to twenty minutes to get some snakes to eat, I saw a video where a guy was feeding his hatchlings and he literally sat there with the f/t and made it dance for twenty minutes before the snake took it.
If you have a heat light, turn it off and move it away from the cage during feeding. My pastel couldn't differentiate between the mouse and the heat light until I turned it off and pointed it the other way.
Wait two days no handling, and go near the cage as little as is possible. Then AT NIGHT (like 6:00-8:00) attempt to feed. Gently place the mouse in the cage and just walk away and come back in five minutes and look from the other side of room, uneaten, leave and come back in another five minutes and then if the snake isn't out and about remove the feeder.


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