What can I do if my attorney charged me $2500.00 for a contested divorce?

My wife and I share an apt. together for the last 11 months we have been married bout 11 months I filed last week for a divorce. My attorney tried to get me to talk to her and have her come in his office and settle there on a non-contested divorce for $750.00, only if me and wife had settled all our assets and personal items etc. Mind me she only had her clothes and shoes and a few personal furniture ware she brought in. The problem change on the money when I told my attorney that she mentions she was not going anywhere although her name is not on lease. That’s when he said this is a Contested Divorce. From $750 to $2500 and that's not including court cost. I went and paid the $2500.00 fee; my attorney also said it would be contested even if she pack up and leave. So the later is starting to happen she left a note saying she will b gradually be moving her personal things out? The $2500.00 was non-refundable. Why is it still contested now she has decided to leave? We have no kids together although she brought a adopted 7 year old into the marriage, but I did not sign my name on any adoption papers during the 11 months to be the child legal father. What am I contesting, dishes & pots & pans. Both of our cars r in our own name and we had them before the marriage and we have no joint bank accounts are property together. I think I may should have tried to ask my wife to mutually settle for a non-contested divorce. I think it's too late to renegotiated with my attorney. Are do u think I made the right decision? Is my attorney correct by telling me saying even if she moves out the apartment it’s still a contested case? Are was he being deceptive knowing I was not aware of legal matters? I felt I might have not handled this right. But the $2500 may be the best for my situation. Some feedback would truly help.