About income information:
1. No matter which state you are living in now, your attorney can send your hu*****and and his employer subpeona for his income information and tax information as long as you can provide the accurate address.
2. Even if you don't know the address, your attorney can request that information through your hu*****and' attorney.
3. Don't let the other side continue the case. After almost three years, the court should have set up the trial date. Tell your attorney to send the other side message that you are determined and preparing the trial. If the other side file any motion to continue, let your attorney response to it and deny it. The court will consider your side resonable argument.
4. Going for trial is expensive. But lawyers charge by hours, you already spent huge amount of attorney fee in this three years. It does not save you a lot of moeny if you do not go for trial at this moment.
5. Don't afraid of joint custody. Nowadays the court emphasizes the father's equal right and seldom grants sole custody to any side. From what you described what the other side requested, that kind of plan can be called joint custody too.
6. We are not attorney. But we should know the domestic relations law. To buy a law book related to the divorce and teach yourself some basic law. This will help you understand what is going on and how to protect yourself.