Ball Python Feeding Question

Yes I know I posted in a different forum section but I didn't see this one before and I was in a hurry. I made the attempt to feed my young ball python tonight, and he took the mouse without much of a problem, but, now its been over 2 hours and he still hasn't begin the actual 'eating' process'. He's just holding on to it. Same size mouse (actually probably a tad bit smaller) that he has been eating for about 2 months now. He's got it in his mouth around the mouse's neck and is coiled in a loose ball, and every so often he'll roll over or change postion just a bit, but never lets go of the mouse. Not sure whats going on or if there is something wrong just looking for suggestions on the situation. Thanks guys.