First of all, you should be patient. Don`t even expect your stubborn feeder should eat every week as a regular scheduled basis. This is what I`ve learned from my stubborn feeder female champagne. I feed her weaned white rat every three week at night without light. Now, I know the timing when she wants me to feed her and 100% she eats the pre-killed rat. You need to learn the timing and what kind of prey your snake likes to eat. You must understand your snake`s nature.