How are you measuring your temps? In the 70s and in the 80s isn't very accurate. Hotside needs to be 89-91ish. Cold side shouldn't be lower than 80-81 degrees. You shouldn't be handling the snake either at this point. Snakes don't love handling, especially young ones. That stresses baby ball pythons out quite a bit. You should leave the snake alone for a week or two after fixing your temps and then try live small mice in his enclosure. Just my $.02....
Regards,
B