If all else fails, you can attempt to force feed it protein enriched baby food. Buy a feeder syringe and attach a piece of aquarium tubing on the syringe tip and make sure it's lubricated with cooking oil. Afterwards insert the tubing about 3" into the snake's mouth and SLOWLY inject the syringe. I did this over a period of a month to nurse one of my pythons back into health after going off feed for a year. Now he's one of my best sires!