I've gotten most of mine when they were young too, but I do have to handle them more at that age and some of them don't like that. So some of mine have been a little scared of me when young, but now that they're grown, they jump on my lap for treats.
My strategy is not to handle them if they don't like it, unless I really need to for health reasons. But I do go out there frequently with treats and encourage them to get closer and closer. I imagine that strategy would also work for turkeys.
Still, I don't know exactly how tame you want yours. Personally, if I can get my birds to follow me where I want them to go, and be happy to see me, then I'm satisfied. I don't need mine to be lap birds, although it's entertaining if they are.