Child support question

To anyone that gets child support how long did it take to start getting the money after doing that paternity test?

This case has been ongoing for two years. It took them this long to locate and serve my ex. We have a 5 year old that I’ve raised alone his whole life. I was called today by the child support office telling me that my son and I need to go in for a dna test. I’m so excited that thud is finally over and I’ll finally be receiving help with my son. In just curios about how much longer it’ll be until we get a court date and receive help ?