@WatermelonSocks I couldn't not reply to your post. I'm 32 now but I have had ARFID since I was a toddler, sadly not diagnosed until I was 15 but once it was acknowledged as not just fussy eating it was like a weight had been lifted (for me and my parents).
Definitely speak to your Dr and get a dietician referral. They will be able to help.
I just want to reassure you that while I still have issues with food I am a functioning adult who loves a lot of foods I used to hate as a kid (vegetables/healthy food etc.) I have a varied diet now and I don't have to take my own food to places (my mum used to take food for me on holiday
).
As a kid I survived off of pancakes, toast, plain pasta, cereal and at one point a naan bread was a meal of choice.
Things that helped me: my parents served food "family style" so putting it out and helping ourselves, they never commented on what or how much I had on my plate - this resulted in our Friday night Indian food originally just being a naan bread for my dinner, then naan bread and rice and then eventually I tried the curry (started off by dipping my naan bread in). Curries are now one of my favourites.
Maybe try meals being built around something your DS likes - if he will eat plain pasta then offer a sauce like a dip (separate bowl) but don't comment - if he doesn't try it's no big deal, if he does try, it's no big deal.
Always offer something you know he will eat with dinner (slice of toast, handful of dry cereal) even if it "doesn't go". It might just relieve some of the pressure you're feeling around him not eating anything if he's likely to eat something on his plate.
As I got older my parents would always say "if you don't want to try it, or you don't like it, there's -insert something I did like- instead" which relieved some of the stress for me and made me more likely to try something. But if it went untouched my parents never pushed me to try it.
Lastly, I think as a parent of a child with potential ARFID you have to have a thick skin and remember your child sees/hears things. I firmly remember my mum (normally a shy lady) sticking up for me when people used to comment "she wouldn't get away with that if she were mine". My mum was my biggest cheerleader and I will always be grateful for her not being swayed by societal pressures as I feel I'd have had a longer journey if she had.
Good luck with your DS and I hope mealtimes eventually become less stressful for you.