Based on the limited information provided, this would be my advice. Hearing
aids are unlikely to be of much benefit. However a trial can be done. The problem with hearing aids is that the child might fall further behind his speech milestones as the quality of the sound he perceives will be very poor. The definitive treatment would be bilateral cochlear implantation.
Next Steps
Consult a cochlear implant surgeon.
Health Tips
Cochlear implant is not a get it and forget it option. It requires extensive therapy post surgery and huge amounts of familial encouragement and support. And as with every surgery, it is not without risks. I would recommend a hospital with good patient loads such as CMC Vellore for this advanced surgery.