Hi ElizCH, nice to meet you!
I am sorry to hear of your current PA and PsA situation, but hopefully now things will begin to get better!
I think starting a journal is an excellent idea, it really helped me a lot. You can just start one in the Journal section, everyone is very supportive.
Taking a probiotic also helped me out quite a bit in the beginning,I hope it helps you as well.
I added foods back one food per week. I found it could take up to 4 days for symptoms to show up, and then several days for them to back down once they were there, so sometimes it was one food every two weeks. For a long time I just stuck with the plain Elimination Diet plus any foods I'd tested and were OK, because I just wanted to feel good and have less pain. I am still adding foods back, slowly, to this day.
Also, we have an ongoing
Elimination Diet Support thread going here if you'd like to join in there as well. Having a group of folks to talk to and learn from is very helpful.
Hope this helps!
Nicole