Keep being optimistic. I've been dealing with this for almost 30 years now. The whole CG thing has really helped me, but I do get times where my scalp and face completely freak out. Antibiotics could be causing yours to flare up.
I've been using oils like you and have found that they work better than the steroid creams and prescription shampoos. I use coconut and most recently hemp. I have also been taking hemp oil internally. It's good in oatmeal. :-) That has really helped. I sleep in coconut oil sometimes...on my scalp and am trying to do it more frequently. I use the oil cleanse method on my face.
I hope your scalp recovers after the antibiotics.