My 2.5 year old son was recently diagnosed with SPD by a clinical psychologist in our area. She observed our son 1-on-1 for an hour and for 3 hours in his preschool. She was clear to say that he doesn't have autism when we asked her (multiple times). We've scheduled him for 3 OT and 1 ST per week at a local center. We've agreed to monitor his program and re-evaluate him after 6 months.

The Dr. told us that his developmental level is at 18 months and that his language should improve after OT and ST. At this point, he uses delayed echolalia and jargon, but I'm really worried that he is using delayed echolalia a lot. I've read that it is a normal part of speech development, but I just want to be sure that we haven't overlooked anything. He's a very smart child. He knows the ABC's, 1,2,3's in English and Arabic, shapes, colors, names of animals. He will say them as he plays with them and sometimes when prompted while playing.

Should I be continue to be concerned? Will it get better? I'm so worried.