Mildly autistic child 3 1/2, speech delays

Hello experts,

Please kindly help, I have a son who is around 3 1/2 years.

He has always had keen interest in alphabets, numbers and he learnt them pretty early.

Few months back he also learned how to write, he can write words like apple, red, cat etc.. He knows how to type on computer keyboard and uses tablet, he has no issues learning about how to use any gadget very quickly.

However, he does not do things in a meaningful manner, for example he would open a game in a tablet/computer and listen to specific music tune for long time and just keep on enjoying it instead of trying to complete a level or try to understand what the game is about. He does understand that after completing certain steps a game would be won, but he does not try it himself he rather pulls me or my spouse to complete the level, also if he likes level 12 for example, he would want to play that only, if I put a next level he will close that level and open level 12. He also spins sometimes to the tunes which he likes, but if I say, "no" he stops and comes to me with little bit sad/upset face for stopping him by saying no, but then he would quickly go back to spinning if I do not repeatedly say "no" or turn off the music.

He does not speak anything meaningful, he just repeats words, rhymes, songs etc. He does not even say mummy, daddy or I am hungry or I need to go to the bath room.

I have heard him say daddy or mummy only once or 2 twice when he was much younger and felt a big change in him after around 18 months after he got his mmr vaccinations.

He did had a traumatic birth where water broke more then 8 hours and upon his birth he had to be kept in NICU for 2 more days, also he did got jaundice soon after his birth. We were taking him regularly for doctor visits and she was not alarmed by anything, initially our son also had swollen head as doctors had to use suction cup for the delivery.

He has been picky eater: mainly eating, flat bread, fried potato finger chips, cookies, muffins, pediasure (milk with added vitamins, protein, so aid for nutrition), candies and mainly hard textured things like crakers. He also prefers different types of breads with cinnamon. Apart from that he does not eat any fruits, veggies or meats/eggs, he used to drink Orange juice which he left drinking after he saw me using juicer to take out the juice (he must have realized that fruits are chopped to take out the juice).

He has been constipated since birth, has good immunity, only once got loose stomach which appeared to be bacterial but mainly does full formed poop. But does it with difficulty if he does not does to the bathroom for more then a day or so. Drinking water helps with his constipation. He still does not use potty for going to poop, however he uses potty when we ask him for peeing, mostly we have to take him to potty ourselves, but he does not cry or oppose to it.

He is very cute boy and everyone loves him, he used to avoid the company of kids of his same age only preferring to stay with the elders whom he trusts, he recently started going to a school which also specializes in dealing with such children and we are seeing he is slowing becoming OK being in the company of other kids, but mainly he chooses to stay doing things on his own in his own world.

His hearing is fine, but he would not pay attention if you'd call him, however if he listens to his favorite tune or game sound he would immediately pay attention. Slowly he is coming to know what his name is and at times looks back if someone else (for example his teacher) would call his name. He also knows how to write his name, but does not like writing his name he would write apple or red but dislikes if we make him write anything else then what he wants to write.

If anyone of the experts could please assist it would be very helpful for us.

Sincerely,

Thank you.