Speech development related question.

My son is currently 2 years and 10 months old, weighing 14.8 kilograms and standing at a height of 92 centimeters. He's incredibly active and has met all developmental milestones on time. he understands our mother tongue, Telugu, very well and can recognize numbers 1 through 9, as well as letters A to Z. He can also write a few letters and numbers and enjoys drawing simple figures like the sun, moon, and ice cream. Sings few rhymes, knows the names of simple fruits, vegetables, food, animals, vehicles. Although he's not attending school yet, we plan to enroll him this month. I'm feeling a bit anxious about his speech development.However, when it comes to speaking, he typically uses only 3-4 meaningful words in a sentence. (His vocabulary is more than 200 words).   Is it normal for him to talk like this at his age?