Try waiting until the snake is settled under a hide then dangle the warm rat over the entrance.. some will only strike from within their hides .
Guess you can snip the feet off to make things easier ..
Years ago I had adopted a Royal who'd only eat thawed chicks but they were soooooo cute that I had to snip off their heads and feet so I was just having to feed balls of yellow fluff each time ( 3 at each meal) ..
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