Are you weighing him daily? I weigh mine daily and if they lose 5% of their body weight they get tube fed.No tube feeding, curiously he is still eating pretty well: Poultry layers mash(a little), millet, lettuce, banana and yellow corn... Quite a bit. He is still roaming but can't jump onto his normal purches much to his frustration. I am happy to buy him anything that might help. Any thoughts on particularly delicious treats ?