Need help desperately!!  7 years old non verbal son with Autism.

Hi,
I have a 7 year old son with ASD diagnosis. He is a very active and sharp kid. Main areas of concern is his speech, comprehension, academics, behaviour.
He reached his milesstones at proper times. Started sitting at 6 months, first teeth at 6 month, crawling at nine month, walking right on his first birthday. He was a quite child, very calm at home but at any family gatherings he would get stressed out. We noticed this behaviour on his first birthday, he was very fussy that day. After that one day we went to a relatives house, he was 21 months old he was sleeping when we arrived at their house, when he woke up he was hyterical. He was crying abd no matter what we did he wasnt calming down. We took him outside and after 15_20 min he calmed down. Then we slowly started noticing that any new place, new people he would not be confortable. If i tske him to children groups he will not interact with anyone, if he finds stairs he will keep climbing up and down the stairs and I noticed he wasnt aware of dangers, he didnt care about heights, if he is on a stage he will just go stand at the edge, wont watch for cars, we call him to stop he will keep running. So we knew that he is not understanding what are we saying. This is all from 2 to 2 and a half years of age.

When he was 3 months old he got bladder infection, he was hospitalised for 5 days and was on antibiotics. I have always noticed dince his birth that it was difficult for nurses to draw blood out of him for any tests. It took them three tries, first o. One arm, then on second arm and finally they were able to put the IV needle on his leg. Finding the vein and drawing blood out has always been a problem since his birth.

His delivery was vaginal and my husband says that there was cord around his neck but i dont see it mentioned in the hospital records. I remember them asking ne to stop pushing after he was half way out and my husband remember taking off the cord from around his neck. He did cry right after though. 

From birth to first three months until his hospital visit, he usually would develop rash because he used to poop very often. I would change diaper and wirhin the me t 10 mins he would poop again. So i started keeping him without diaper. Then after the hospital visit he started to have constipation which got better at 3 years of age. We tried fibre diet, homeopathic remédies for constipation from a local homeopathic doctor but nothing helped. For three years we had to used stool softners to help him. He would ho without bowel movememt for 4-5 days if we dont help him with.....

He was babbling at nine months and saying dada, didi but never went further eirh Word s... Then slowly he starteb babbling mama, dadi ji, but will mot say when he should just babbles them whenever he wants to.

If we are in a dark room and we turn light on, he will get upset and turns it off. This started when he was around 4 years old. Even now if we come home and its dark he will not let us turn light on. One person has to come in first turn on all lights and then bring him in and then he is fine with lights on. If the light is on he wont let us turn off and if light is off he wont let us turn on. If i am cooking and i turn the exhaust he will come and turn it off and same with bathroom exhaust. Seems like any change in the environment he is in related to Sound and vision makes him upset.
He is very picky eater. He only drinks milk that too in baby bottle, refuses to drink in glass. Eats maggi noodles in pan in which it is cooked, and eats that sitting on the fireplace. When i cook noodles even if say lets put it in plate he gets angry and will bang the pan and will not eat it. Also eats Bbq chicken tandoori flavour only with lots of ranch dressing. Likes to eat hot food will not eat cold food, spicy food, likes sweet also.

When he was little up until 6 years of age he was letting me feed him and he was eating roti with chicken curry, daal, chick peas, black chana curry, pizza, and a few snacks like cookies, chips but now he is only eating bbq chicken, maggi noodles, milk that too not sitting at the table. When we are having dinner he comes over to the table and feeds us our roti and stuff but if we ask him to try gets upset. And when he is feeding us he will not wait for us to finish whats in our mouth hut he will keep putting more peices on. If we say please wait, he gets upset. When he is upset, gets agressive towards others snd can hit them and lately started kicking as well.

He tests the reaction of other people by doing things that are not appropriate. He will pull the blinds, write on the walls, tear the books, break the toys and if you look at him he will do more, will not stop if asked, you have to go over and physically guide him to stop and as soon as you leave the room he will do it again and will be looking to see if you are coming. Sometimes we ignore some behaviours if we can and then he stops. He likez to take everything apart instead of building or making them. He likes to throw remotes, phones and then laughs after as if its funny.

If he is hurt even by himself he gets upset at others especially if his brother who is a year older than him is in the room, he will scream at him and sometimes go and hit him as if he has caused the harm.

He is slim and has good height.His height and weight is average for his age. He is non verbal with very less understanding of language. He does not even know his numbers or alphabets yet. He has no interest in reading, writing, colouring, if he gets pen he will just scribble on the wall, if we give him paper he will scribble on papet only when we are looking as soon as we go he will scribble on wall . he likes to poke, scrape the walls. He likes to put everything in his mouth. Paper, pencil, crayons, playdough, sand, rocks, paint from wall, plastic peices of toys, batteries etc eveything ends up in his mouth. If we give him chew stick only takes it for few minutes and let it go.
His sleep is fine now but when he was around three years of age he used to wake up at night and cries for good one hour or so. It was very difficult to calm him at that time. We did give him some homeopathic medicine from a doctor in india but he used to give him in powder form so dont know what he was giving. We did not see major changes in my son with that so we discontinued as it was not convenient for us to visit him from Canada every three months. I have read many cases on this forum so thought i should give it a try. Please help me cure my son's condition.