Mine used to gently grab krill from my fingertips ... now it is shrimp. I made the mistake of giving it fresh shrimp and now it turns its nose at krill most times

It still grabs it nice when it is hungry enough, and grabs the shrimp when I occasionally feel like giving some. I have some frozen, but I usually don't feel like thawing it, and since I am a vegetarian (only dairy, fruits, veggies, no eggs), I don't keep or buy anything like that very often.
Mine is very attentive to me most of the time. It is also doesn't care for any activity in its tank ... scraping glass will put it in the bottom corner immediately (its safe spot). Just getting the bucket and Python out, it quickly heads for the safe spot

Though, for the first time, when the tank was refilling, he(she?) went up to it with a bit of anger for a moment
I have gently touched my O a few times, but, I think it will be easier once it gets a bit older.