My daughter attends Primrose in lakehill. (there are others, it's a chain) and I have nothing but amazing things to say about the place. They do sensory activites, music classes, shapes, colors, sign language, spanish, you name it. She has plenty of words already and signs great!!! She is now 13 months old and has been there since she was 12 weeks. Now, they dont have part time programs.
Merryhill school in Frisco off Gaylord/tollway has like 3 day a week programs and they are pretty much dead on with Primrose. They have almost identical daily routines. I would give them a call, I spoke to the woman at the desk the other day and she was SO nice and helpful, if you dont go there, she will lead you in the right direction.
Both are on the pricey side, but well worth it. hope this helps :)