Are you better yet?
I had a cold also about 2 weeks into RRARFing. I continued eating as I was but got more rest, actually, there was one day where I slept 9 hours in the night, and then had a sleep during the day for another 5 hours, then had another 9+ hours sleep the next night! I got over the cold more quickly than usual, and I think it was the extra sleep that did it. I also took ibuprofen, I don’t know how this is metabolically as it is anti inflammatory, blood thinning and supposed to reduce fever.
My Dad always used to say “feed a cold, starve a fever” and I think there is some benefit to that piece of “folk wisdom”.