Well I have a 4 month old ball which refused to eat for 2 weeks but luckily I got him to eat thanks to advice of other guys on this forum and I want to share what worked for me. I tried offering him slightly larger F/T rat than I fed him the last time. I heated it up with the fan so he thought that it was alive and I fed him in his enclosure so there was no stress from being transferred elsewhere. I was moving the rat around so he thought that it was alive and then I came closer to his hide, he came out and I started to just move the rat near him so he could see it. After few minutes of doing this "zombie dancing" he ate it no problem :-) maybe give it a try and try heating him up with a fan so he thinks it is alive.