We're still working on stepping up. Using the T-stand and hand held perch in the bathroom has been really helpful. He's getting really good with that. As before, the handheld perch works fine. Stepping up to my finger has proven to be a lot harder for him though. He just doesn't feel comfortable with that at all. If pressed, he'll hang on to the perch with all his might, flap wildly, and nip (no broken skin though). Keep trying and he'll fly to the floor rather than step up.
Today I thought to try something a little different, and offered the back of my hand or wrist instead of finger. Never thought to try it before, since it's not like he's a very big bird. But hey, that seems to work a lot better! He'll investigate with his beak but doesn't nip (not as easy to get your beak around as a finger is!) and steps on with minimal fuss. Just may be on to something here!
