....not to mention, gliders rarely sit still, especially at night when they are wide awake.
Depending on personality, some of us have some that will allow us to pet them as they sit for a few minutes. Mine won't sit still in my hand but a few of them will sit on my shoulder, or hide in my shirt in the crook of my neck and allow me to pet them.
So basically I wouldn't use the "sitting still" thing as a gauge of your bonding, but more like Alden said...they will seek you out for comfort and safety. That's a good sign & a wonderful feeling!