Dorian appears completely normal for his age. Maybe if his language does not improve in the next 6 months or so you could consider seeing a specialist. You just wouldn't want him to start kindergarten with him having difficulty communicating with others. It can already be a situation which is stressful for some kids, it's best for him if he has all the tools he requires for that important step. Right?

He had two specialists earlier this year, but only up to his 3rd birthday. Luckily Dorian isn't going to kindergarten  So far we still plan to homeschool him BUT I do want to put him in activities and other things that will socialize him.