You might want to go on a low-residue/liquid diet in the meantime to avoid an obstruction. If gluten and dairy-free made no difference, SCD and Paleo probably won't either. It's my belief that these diets just aren't up to controlling severe Crohn's like yours (and mine before surgery).
I don't know if this is an option where you live, but in Europe and Japan there is a treatment called adacolumn apharesis. Google it for more info. It basically involves removing the blood from the body, filtering out the white blood cells, and returning the blood back to the body.
If you are interested in trying helminth therapy, here is the relevant site: autoimmunetherapies.com/
. It doesn't come cheap.
And finally, this guy was the first person in Canada to have a stem cell transplant for Crohn's: maybe you can be the second person! transplantforcrohns.com/Home.html
Dx Crohn's in summer of 2000.
Tried and failed: 5-ASAs, Azathioprine, 6MP, Remicade, Methotrexate, Humira.
Diet didn't make any difference either.
The only med which worked was Prednisolone, so I ended up steroid-dependent.
Had surgery 2/13 - subtotal colectomy with end ileostomy. Currently on no meds and in remission. Also prone to depression and anxiety. Ask me anything >_>