Sensory Intergration in Babies?

So a little history about my son. He was colic for 4 months. Once he outgrew colic i thought things would be better for him, but it got harder and harder. He is very hard to please and when you cant please him or figure out what he wants he will throw many tantrums a day and sometimes hard to calm down. It could be he wants a snack...he will pull his hair or bite himself. He gets very frustrated and anxious very easily. So that is his way of communicating. Naps are very hard, he will not sleep without whitenoise or motion. I have tried a swing but he has always hated that. He will take me up to an hour to get him down for a nap and the whole time he is throwing himself back. He has trouble self soothing. He needs routine and anything outside of his routine throws his whole day off. He is having trouble in Day Care and spends most of his day fussing and not only that they cant get him down for a nap. My son was saying mama...dada..and aagoo. Then it all stopped about and he hasn't said it since January. He constantly needs one on on attention or play. He will not play with something no longer then a minute. I have set up 3 playrooms in my house in with 30 minutes we have completed them all. I cant leave the room for a second it will get extremely upset. He has no interested in watching tv. The only thing he will watch is baby Einstein xmas and if you change it he will let you know about it. I brought him to a specialist and she said he is showing signs of sensory Integration. He is getting evaluated tomorrow by an occupational therapist. For those who have children that are older and got diagnosed with SID. What were your children like as babies? I have tried to look up SID in Babies but nothing comes up.