FILE for child support, period. Let him know that since he is planning to not pay for anything after the end of this month that you have no option but to file to make sure the kids and you are provided for. He might be bluffing but call his bluff. Once you file he has the legal obligation to provide for you, if he doens't respond to the CS request he'll be served by a sheriff, I doubt he wants that. So, either he stops his stupid threats or you file. Dont' wait until the last moment, your kids' future is at risk, stop waiting for him to grow a brain, stop wishing things were different.
Your brother must be loaded and that's why he must pay so much. stbx pays 1,800 per month for both kids and he makes about 45k, it has to do with cost of living on your state, how much you pay for child care and mortgage.
Are you not filing because you dont' want to make him angry? look at the position you are in, he has no regard for you, thus, you must put your and the kids' interest first, he isn't thinking of anyone but him.
Be not afraid...I will repay you for the years the locusts have eaten Joel2
30something 2kids survivor of S, MLC, A, D I have peace in my heart, at last.