For the most part, yes you are just impatient (I tell ya what, I think most of us are!). 3 quarts in 2 weeks of feeding only produced a frame of brood. It takes time for the hive to build up numbers strong enough to move up to the next box. Since you said they were robbing wax from above, then they are not in a strong enough nectar flow to draw new wax yet. Give it time and keep the feeder on, they should move up and start drawing wax as they get strong enough and need the space to expand.