Depends on what kind of brain damage he has.CP has United Cerebral Palsy.ALS,Parkinson’s etc. all have charitable groups for their specific need(research, therapy,support,etc.)

My mother also has brain damage. She gets social security and has a nurse come out and check on her throughout the week. Also, local charity programs help with someone going out and helping her with grocery shopping when I cannot be there.

He should be eligible for a govt check plus medicaid for meds and medicare for doctors. Call SSA

There’s social programs.