Your best bet is to move. Massachusetts, New York, New Jersey, California, Minnesota have good services. Texas defunded special ed in schools and the Feds cracked down on them so now they have to provide services but it will take years to get enough providers. I would move. But what you want is a center based program (so you can work). You can find these in Arizona and Florida as well I believe but there are issues there due to republican control of the state legislatures. FYI Minnesota HAD crazy wait lists and a Federal judge admonished them for not spending the money and things turned around in about 2-3 years. So we do have limited providers with about a 6 month wait list and only 1 provider in the metro area for kids older than age 7. So I would say Massachusetts or New Jersey or New York.

In my experience school districts are terrible at providing services. You want county level, private insurance or Medicaid. Also you want to be in a college town or near a college town because 90% of the line ABA therapists are college kids (supervised by a BCBA etc.. and up to a psyD etc... that helps staffing immensely. California has a 6 month wait at the regional center level for assessment, Minnesota has a SMRT wait of 60 days if I recall correctly but the bigger issue is ~6months to get into a center based program.

If moving is not an option another idea is to start a program. You are not alone and other parents will band together. For Texas it would fill a huge need.

EDIT:

Article discusses New Jersey and their well established system.

https://www.nbcnews.com/health/health-news/new-autism-number...

Below link summarizes the laws/programs in states. Generally, the earlier insurance coverage was mandated the more providers a state now has.

http://www.easterseals.com/explore-resources/living-with-aut...