I've had my Cham for about 5 months. He still hisses at me and won't let me handle him at all. He doesn't run from me. He's not scared of me he just wants his space. I do have a free range set up and let him out everyday. The more he gets out the less timid he seems. I would suggest letting him out often,hand feeding and giving him his space. He may eventually come around, he may not. Just like I have read a million times on this forum patientice. He is a Cham and may never want to messed with but I found having a good free range and letting him cruise around outside his cage is just as cool as holding him.