L.G.
You should contact Early Childhood Intervention Services in your area. ECI can come out and do an assessment on your child, to see if he qualifies for the program. If so, therapists can come out to your home and work with him, and in many cases for free.
Here is a link to an ECI office in McKinney that serves Collin County.
http://www.eci-lps.org/first_steps.html