25 months with possible Apraxia Diagnosis

[Guest guest]

My son has what our speech patholigist thinks is Apraxia. She says she

can not diagnose him and that a Developmental Pediatrician would have

to make the diagnosis. She is treating him for Apraxia because he has a

6 word verbal vocabulary, says 3 consonant sounds (only D consistenly),

his vowel sounds are distorted, and he has a nasal sound when he talks.

Do I need to get an absolute diagnosis or should I just follow my

therapist's advice?