Does anyone know an immigration lawyer willing to help for free? Tomás, Oaxaca de Juárez

I'm facing a custody dispute, with a hearing on October. I earn too much to qualify for legal aid on paper, but not nearly enough to pay a lawyer's retainer. I'm looking for a qualified immigration lawyer licensed in Oaxaca who might be able to review my documents, prepare me for the hearing, or take the case pro bono or on a reduced fee. I've organized my documents chronologically, and I'll share them with the lawyer who agrees to help. I can travel to your office in Oaxaca de Juárez or meet online. I understand that the time of a lawyer is valuable, and I'm deeply grateful for any help or for suggestions of organizations that could assist. I hope life is good to you.