M.R.
I have a 3 1/2 yr old son that is speech delayed. He's been delayed since 18months. It all depends on how delayed he is. I would work on asking him question, who what where and why? Ask him what he wants and then make him repeat you. My son goes to private speech therapy every week and through his school as well. Anything I can do i will be glad to help just let me know.
Thanks
M.