Indeed need there's no way of knowing how the other path (ie not getting DN diagnosed) would go. It's a subject that comes up often re home ed too, we can't simultaneously HE and send them to school, we just have to trust that we are doing our best.
Sorry sunny I have probably not been the best example of getting kids diagnosed lately what with my nocturnal sobbing the other day 
but FWIW I am glad I do have that definitive answer now, and for their sake too as I remember the agony of growing up not knowing why I struggled so much, and the sheer relief when I found out why - but also the sadness at thinking how much it could have helped to know earlier IYSWIM. I was not in a huge community of probably-Aspie scientists though so perhaps that makes a difference :)
Can't comment on the private school, I have heard (from MN) that some are not inclusive but perhaps if that were the case it would be better to know before he enrolled, rather than some problems emerging later down the line?
I will also say that - while school applications would obviously need total honesty - we don't have to tell most people if we don't want to. None of DD's old school friends know, and with some of the clubs that the Caglets attend, they have no issues there so I have not felt the need to tell them now that they are diagnosed IYSWIM. I only have with taekwondo as DS just started and I worried about his attention levels (although it turned out to be unfounded and he is doing brilliantly yay!) in a much bigger class than he's used to. But generally it doesn't come up unless it needs to and if he is diagnosed I think you and DS will gradually get used to judging for yourselves whether you want to tell people or not :)
Welcome queen glad you have joined this lovely group, as you can see we talk a lot of frugal stuff but a whole load more besides, it really is a fabulous group of supportive people ❤️
Sympathy on the non-wet-food-eating, even my DD who is pretty good with lots of different veg etc gets totally put off by mixed up foods etc, it gets very boring. I would love them to eat stews and stuff.
Also I am sure I saw on eat well for less once a home made fruit winder recipe, cooking down fruit juices and spreading them out on an oven tray or something? Might be worth a google. Love the parking map idea too, and it adds a bit of exercise into the (literal) bargain :)
It's been a tough day here again and I am seriously looking forward to my chicken stir fry :o