In Hong Kong, the subvention (gov't) home for the elderly didn't accept case aged under 60
You can just find some private home for your case, may be around $6-7k/month
I suggest you contact the medical social worker in hospital first, they will give you a list of private home.
Besides, if you get financial problem, you can also the social worker to apply for CSSA/DA/diapers... (comprehensive Social allowance or disability allowance)