Well how old are your sisters??????
Has your bp eaten yet?
Really, you must give it a couple weeks and make sure it has eaten 2 or 3 times before you handle it, because otherwise it gets stressed out and problems could ensue.
I know it sucks, and it's tempting. Right now I am in the process of quarantining my new bp, and trust me I want to handle him as well. Just tell them that their patience will pay off in the long run.