the wise ones will say you should never leave live prey in with your snake for fear of they prey biting your snake, they will also say not to stress about your snake not eating as they go thru stages of not eating..

just make sure your husbandry is on point and when the little fella is ready to eat, he will..

now as far as the live prey you got, you should probably kill it and freeze it, maybe you can get your "picky BP" to eat it later on when he gets more on a eating regiment..

i am pretty new myself, but every thing i have read is pretty much this. someone else i am sure that is much wiser then i will chime in and maybe give you some more ideas.

HTH!

mike