Yeah, I don't think he'd ever mistake you for food. They hunt by heat signatures and smell, right? You're hand won't broadcast the same heat signature as a mouse, and unless you've been handling one recently you won't smell like one, so I wouldn't worry about it. And really, the anticipation of being bitten is far worse than the bite itself, especially when they're little. It hardly hurts at all and barely bleeds.

My Spider was a poor feeder. Luckily, the place I got him from is amazing, and when I went in to get him another mouse to try, and they asked how he was doing and I said not eating, they said to bring him back and they'd put him in a nice, dark, little, humid tub until he started eating. It took about a month and he still feels squishy, but he's a garbage disposal now Getting the perfect, dark place for him is a long way in the right direction.

Be patient and gentle, and good luck!