I have a couple of adults that like to feed themselves when I'm not around, but babies usually are more responsive to moving food. I'd definitiely agree with Michael, temps are too low - mine usually run at around 29C, and they don't need any sort of gradient in a shoebox sized enclosure, which sounds fine to me.
All other things being OK, make the changes suggested here, and see how you go. I meant to say, if you replace the lid with something like a bit of wood for feeding, if you do get a strike & wrap, don't close it... just freeze or walk away if you can... but remember to replace it as soon as the snake has swallowed the pink. even if the snake has partially swallowed, just leave it until only the tail is sticking out, or it may just chuck it all back up.
Sounds like a workup, but you'll only need to do this a few times before the snake is just like any other, my babies at 4 months don't give a hoot about other things in the room when feeding. It's just a confidence thing... for you and the snake!
I'd give it one pink the first time you succeed, and then about every 5 days after that. He's probably got a bit of catching up to do!
Jamie.