Nabiki
Quail Geek
You are definitely going overboard on the treats.Mine probably gets about 5 daily, I use them to teach them tricks.
For example, my quail, Sugar, will walk up my arm and onto my shoulder if I open the cage door and put my hand out in front of her palm-up because she knows she gets treats at the end.
When I open the door on their cage another one of my quail, George, will walk to it and wait for my signal. Only after I tap on the ground in a certain rhythm will she fly to that exact spot expecting a mealworm.
The other birds aren't as tame, so I don't try teaching them tricks. I think this is the furthest you can go with quail tricks, I doubt they have the mental capacity for anything more.