Impulsive aggressive speech delay. Me!

My baby is 2 years old. His birth weight was 2kg 900 g. And now at 25 month is 12 kg. He is much obstinate. He is not growing as per age. He doesn't recognise mother and father . He doesn't say mammi papa but speak other word like hawa( air) tam (khatam/ finished) gay (cow) boo (milk) Mumm (water) Tatta (hot) and other words. He like to play alone himself. And while he plays he runs here and there and keep running doesn't stop. If I catch or stop him. He started to cry . And while he is busy in doing foolish activity he doesn't listen anything whether I shout or not. He doesn't care anything . He keeps speeking to himself and playing but I  don't understand what is he saying. So speech delay is there. And also he can't sit for 1 minute in one place until tv is watching . Never tired even plays continuously for 2-3 hours. And doesn't tke rest at all. Also he doesn't sleep easily . We need to do lot of struggle to make him sleep. It takes arround 1-2 hour to make him sleep. guide me