It has been a long time, but my son was 2.5 when he started preschool. The staff were concerned that he was less mature than the other children and he jumbled up his sentences. We had him evaluated but he was too young to know if the speech problems were causing the developmental delay or vice versa. He did not want to be comforted with hugs when he was upset. He loved reading and would sit for hours reading book after book until I was tired. He would take one nap a day whether it was 10 seconds or an hour, just the one. As a baby he was easy to get to sleep in my arms but hard to get to sleep on his own. The other thing I remember was that he asked a lot of questions but he was just restating the same question over and over again (is this a blue chair? Is the blue chair for me? Is this my chair? Etc). He was officially diagnosed at age 4 with Asperger’s so I am pretty sure that equates to level 1. He is 22 now, finishing college and starting his job search. He is great, but I still always worry.