a few things you can try: do not go into the snake room for at least twenty four hours. get a red light that you can screw into your overhead light, and unscrew your white light.(do this during the day, so when you go in after dark...you don't have to turn on the white light. I like my humidity in my ball enclosures to be about 70% or a touch higher, but 65 should be okay. thaw your feeder out and after it is thawed, put it on a heat pad for at least an hour...get some long feeding tongs. go down after dark, as quietly and as vibration free as possible. easily slide the tub open, pick up the mouse or rat pup with the tongs(the farther your hand is, the better so the python does not pick up on your heat), and slowly 'dance' the mouse or rat hopper around like it is alive....starting far away, then SLOWLY move it closer to the snake once it looks like he notices it. try to simulate a live prey item. take your time, and don't get in a hurry. have patience, ball pythons can be very tricky. but if you have their environment right, and don't be too pushy, you can usually get them to eat. there is a lot of little tricks and techniques that you can try, and they will get it...and eat for ya eventually. try this method and see if it works for you. let us know how it goes. if you can get live for it...you can try that first since the animal seems to be losing a little weight...but you also have to realize that if you weighed your animal with food in him, then he took a big dump...he will weigh less...just an idea. give a try and see if it works. good luck