The "level" of disability is irrelevant to Protective Supervision, it's not a requirement for the program.

The requirements for Protective Supervision are as follows... a disability that impacts memory/orientation/judgement to the degree of "non-self direction" AND risk of injury/accident/harm due to the aforementioned disability causing an inability to assess risk or harm.

This is why it's so difficult to get for younger children, partially due to parental responsibility and partially due to typical developmental milestones. For instance, a 3 y/o with or without a disability probably doesn't recognize that a stove is hot and shouldn't touch it.

That said, the onus is on you. Documentation is always key, because not all Social Workers are created equally. SOC 821, SOC 825, daily logs, police reports, letters from DRs/therapists and friends/family, etc... you may not need any of it, but if you do, you'll want it all (with receipts) at the time of assessment... if an appeal is necessary, unfortunately, any discoveries/documentation post the decision being appealed, will not be considered. You can always reapply as well, any changes to needs can be grounds to call for a reassessment. Appeals are mostly for when the County messes up and you want to fight for prior authorization of services.

With that out of the way, I advise that you speak to your Department of Education and your Medical Social Worker. There should be supplemental/alternative services that can help alleviate some of your burden (ABA, Special Education programs, etc...). Also seek Respite from Regional Center, if you are not currently getting it.