I wish you luck with him.
how are you getting on feeding the mushy food to him?
You may want to consider joining a local herptology society. I found one at least in Turkey at Adnan Menderes University:
http://turkherps.org/
Same group on facebook: http://www.facebook.com/turkiyeherpetoloji
There will be more people with lizards, snakes, turtles, frogs, etc. who will be able to answer your questions locally.
Also I recommend putting the food mix on the top of his nose between his nostrils; he might lick it off of there.