You could try offering the two small mice you have left. Our full size male bp [6ft] is a strict mouser so he usually eats two adult mice [the biggest the pet store has available] and he takes them both with no problem and hasn't ever refused the second. Idk how big your snake is and how big the mice are, but offering both might be an option if he's not too small. Though depending on his size, if he eats both, I'd extend the time between his next feed. Worst case, he refuses the second and you have to dispose of it.