Are you satisfied with Tyler's preschool? Do you think he's getting a good education? Are the other special needs kids mild (ie learning issues or ADD or other things like that?) or more classic disabilites?
Here in the States, we have Early Intervention preschools for kids with disabilites.(all kinds)
I wonder if a) Canada has those and if b) Tyler might benifit from that type of preschool.
Not nessarily a preschool for kids with severe issues, but did you know that sometimes kids with CP (normal IQ) have apraxia, so they learn Sign? I wonder if that might be something to look into? Like see if any CP organizations in your area might offer a preschool for kids who use Sign? Or was that the preschool you were talking about that doesn't use ASL? I know you're really working on trying to get Tyler a full toolbox of tools....I wonder if you could get him evaluated by what is called an augmentive and alternative communication specialist? That might be helpful. Like he wouldn't need to use those voice output switches, but I wonder if there's other options. I actually seem to recall that one of the Canadian Schools for the Deaf, is partnered with a program for kids who don't have a hearing loss, but use ASL for other issues.
I am kind of surprised that Canada wouldn't have Early Intervention preschools specificly for kids with disabilites.
So your other son pretty much caught up? Not even a learning disabilty or even social issuew? That's AWESOME!!!! And actually if you contacted the CP organizations, maybe they might offer some support for him too. I know the thinking is that kids with mild disabilties, don't really need the type of things that kids with more severe/obvious disabilites do. But on the other hand, he could meet other kids with LDs or mild CP and there are summer camps and things like that, which might be helpful for him. (and I DO think that many kids with mild disabilites can REALLY benifit from interventions and camps and things like that, which are targeted towards kids with more severe issues)
Unfortunatly my cut and paste is broken
But there was an article in the paper about how they've discovered that ADD has a genetic basis. They tested kids with ADD, and a bunch of them had mild chromosome abnormalities.
I also know that it's not unusual if say a person with Asperger's marries and has kids, they often have kids with more "classic autism"
NOT saying that Tyler and your other son have Asperger's or autism. But I wonder if your husband's ADD may have been passed down, and manifested in your sons as a severe speech delay. It is actually pretty common in things like learning disabilites and other mild nereological disabilites to have a severe speech delay. I dunno.maybe it might be worth it to have your boys tested, to see if they might have a chormosome disorder that might explain why they had/have a severe speech delay.
Oh, and I gotta say as an aside, I do think that part of the autism "epidemic", may be about docs and experts forgetting that other disorders can have severe speech delays.
NOT saying that autism doesn't exist. It does.