Getting the snake onto pinkies may or may not be easy...
You're gonna have to scent the pinky with a prey item it likes. Maybe rub an anole on the pinky. Put the anole's tail in the pinky's mouse, that sort of thing.

And once a month is too little.

Try once every 2 weeks at the least.
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Mike
KingPin Reptiles Inc.
www.kingpinreptiles.com