You can also try larger prey items instead of multiple smaller ones. At the temps you have them at, they would probably be just fine taking larger prey sizes than you're currently offering.
I find that super hungry snakes often do better when offered one large prey item rather than multiple small ones - maybe it makes them feel fuller to have eaten one big thing than multiple little things, I'm not sure. I do know it tends to work for just about any snake species that gets cranky when it's hungry
-Jen