Hello,
Based on my experience bringing home several birds of different ages, some very young when acquired and some a little older, every one of them regardless of their age needed time to adjust to their new environment/owner. What I normally do is for about 3 days, I would leave them alone, no close interaction aside from quietly changing their food and water. Then after that, while still no close (face to face) interaction, I would call their name or make a consistent whistle call every time I pass by their cage to acknowledge them and get them familiarize with my voice. Eventually, they will start getting excited everytime I'm in the room and that's when I start doing close interaction. From talking to them while changing their food and water to petting them to eventually doing step up.
However, different birds have different attitude and personality. Some older birds would never step up (especially those that have had previous owners that just left them in a cage with no physical interaction), but would still interact with you when you're around I.e talk, whistle, walk back and forth etc. in that case, leaving the door open and having a perch right at the door helps boost their confidence. But don't leave the door open unsupervised, interact with them verbally, move closer and closer until they are comfortable with you next to them.
In your case though you have a young conure so it shouldn't be hard getting their trust. ��
I hope this helps, and sorry for the novel! Haha
Franz