Tina,
You mentioned just being on Lialda. Depending on your symtoms and level of inflamation, that could be a weak response. I would say, if you noticed it helped your symtoms, and your next colonoscopy showed improvement, it is working.
If you're still having symptoms after a few weeks of Lialda, you may want something stronger like Humira, or MP6. These are powerful drugs, but Crohns can be a nasty disease.
I tried LDN in the past, did not work for me, but many people report good results. There is a forum here on it and plenty on info on the internet.
I also tried the SCD, Specific Carbohydrate Diet. Again, plenty on info out there. Did not work for me, but I was probably too far gone by the time I tried these. Plus, I hate yogurt, which is a staple on the SCD. Otherwise, I followed this very difficult diet for about 3 months, then had a colonoscopy still showing bad inflamation. Maybe not enough time? Who knows.