Is it possible

I already get ssi for 2 kids and now my 3rd kid is on the spectrum anyone get disability for 3 in the same household?

It would depend on if your 3rd child qualifies and if your income is within the guidlines

I have 3 boys and each get SSI, so yes it is possible

I’m currently only working a prn gig and in school

Possible yes, depends on income and household size