I went to Brassard as well, and I followed their instructions (which boiled down to basically "don't mess with anything until 8 weeks," so it sounds like more or less what you got). I cleaned the dilators in hibiclens, did the sitz baths, and rinsed things without touching in the shower, and it worked out fine; there's all sorts of gunk in there for the first few weeks, and that's normal.
They probably told you what to look for in terms of infection, so as long as you don't see any of those signs or symptoms, you can probably assume that healing is gross but proceeding normally.