Call EI and get the process started today! (It will take about a month before everything is complete and you have some answers about whether or not there is a developmental delay that you need to address). I believe that the Early Intervention contact number for Kane County is: ###-###-####
I went through the EI process when my son was 15 months old and it is changing our lives! Even though he understood the things we were saying (Receptive Language), my son didn't have any words at 15 months (Expressive Language). He was evaluated by 5 therapists and then we held a meeting in which all of the therapists reported their findings and made recommendations on what we should do next. My son was eligible for a couple different therapies and he is now thriving! These services are specifically for children aged 0-3yrs. Research shows that the earlier you catch a developmental issue and intervene, the better the long-term prognosis.
Just because some other kids were simply "late bloomers," it doesn't mean that yours is. Even if he doesn't have a delay that needs to be treated, the therapists that come for the evaluation can give you some great tips on how to encourage him as his speech continues to develop.
EI was the first step in catching my son's developmental issues and getting him the help he needs. This does not mean your son will have problems -- but it's just another Mom's perspective. If you want more details about the process or what to expect, please send me a message and I'm happy to share! Best wishes!!