Yes, you need more ST! It maybe a scarey thing like the girls said above - but my son was thought to have a spectrum disorder at an early age but then was dx with Apraxia.
Quote from the the website:
Oral Apraxia and/or Verbal Apraxia?
Oral apraxia indicates that the child has difficulty with volitional control of nonspeech movement. For instance, perhaps the child will have difficulty sticking out and wagging their tongue when requested to do so. Or the child may have difficulty sequencing movements for the command, "Show me how you kiss, now smile, now blow". Verbal apraxia indicates that the child has difficulty with volitional movement for the production of speech. This can be at the level of sounds, syllables, words, or even phrases (connected speech). The motor struggle is most typically seen with sounds sequencing.
Or what I tell ppl is that the "wires" from his brain to his mouth need therapy to learn how to connect. Jonathan has been in speech for a couple of years and should be fine by 2nd grade.
For more info - do not hesitate to contact me or go to the site...
http://www.apraxia-kids.org/