Good afternoon. I am sorry to hear about this stressful situation for you. If your son is 2.5 years old and has not seen or spent time with his father in a long time or ever, you should ask the court to enter for a reunification process which will occur locally. This will often include phone calls supervised by a counselor specializing in reunification that lead to personal visits locally again supervised by a counselor. From there, it should go to a long distance parenting plan if visitation is allowed. You should argue that he pay for the costs associated with reunification. However, if the court does not agree to that, you will likely pay your pro-rata share based on your two incomes and the child support worksheet. Feel free to call our office to set up a free consultation and possibly discuss this further. I hope this information helps.
You should consult with an attorney in private. There is a lot going on in your case and if you can at least meet with an attorney for an hour they should be able to help guide you through the process. Some will meet for the first hour for free, others charge. Just start calling around and asking about consultations.