Hi My child is 4 year old boy started his preschool in Singapore. He speaks 2 or 3 words combine but not in sentence.. follow instructions very correctly. Call his dad name clearly.. learning and saying animals colour shapes correctly.. sentence formation alone lagging. What need to be done?

A. I Can tell you only I think that by this age are normally kids start to frame proper sentences and everything if your child doesn’t do anything as of now then you should consult a speech therapist they can guide you with the right therapy and exercises for the same that would be helpful over the period