Oral iron supplements do irritate some IBDers. If that's the case with you, your reaction to the supplement could mask any improvement on the diet. It's not to say you shouldn't go ahead and try the diet, but just keep in mind your success may be affected.
Avoiding lactose while on the SCD can be somewhat limiting, but it can be done. I found no matter how I tried making the SCD yogurt, I couldn't tolerate it. That means you have to avoid any SCD recipes with the yogurt and get your probiotics from a supplement - which I feel is a better idea anyway. Small amounts of butter and allowable cheeses didn't bother me. You can also try clarified butter.
Diagnosed with ulcerative colitis spring 1999. Have been in remission for years with only a few minor blips. Scope on 6/22 showed no inflammation at all.
Maintenance dose sulfasalazine. Probiotics, vitamin D, fiber supplement and fish oil caps. George's aloe vera juice and l-glutamine for gut healing. Mostly grain-free and dairy-free low carb diet.