mine too, when he was trying to breed her, he was on his tippy toes ha ha it was kinda funny to watch him trying so hard. what i would suggest doing is maybe trying to hold the female and like posted earlier put a towel behind her for your male to stand on. i know it's harder than it sounds because i couldn't get my male to want to breed her when i was holding her either. but it took a couple of days also for him to be able to finally get it right. if it's his first time breeding that could also be why. good luck, hope he pulls through for ya