My son is 2.3 yrs old. He know only 20 words, mostly learned from picture books. If asked, he could point the picture, but his pronunciation is far behind. For car or cat, he says can, he can say 'up' but not cup, duck is ouck, banana is Nana, tree is thee. His vocabs are not functional. Has anyone experienced this in your kids. Speech disorder in autistic child. How did you improve, waiting for salt appointment. Please share your experience if any.