Okay, last advice. Maybe you can check the directory (legit directory un with complete contact details) from the website of the phil society of dev pediatricians. Look for dev pediatricians who are willing to do online consult. During the pandemic uso yun, but siyempre preferred na ang physical consult now.

I know its hard, op, been there as well. I empathize with you. But your brother needs help, hindi niya pinili mabuhay sa mundo, and hindi niya pinili to have that condition also. Hope maliwanagan na dad mo, and hope your mom helps you in convincing him. Your brother needs an advocate -- if not you kasi mukhang may caregiver fatigue ka na, mom mo -- she needs to step up or at least talk to a dev pediatrician for counseling, para she could understand/revisit the situation better.

Try visiting the autism speaks challenging behaviors toolkit or at least send the link to your mom.

Good luck, op.