The only thing that stands out to me is your switch to the compounded liquid and this can't be discounted just because you haven't noticed any outward signs, this depression had to come from somewhere. I believe its a symptom and it will ease for you, this is what happens when we make a change, a reduction or when we're newly benzo free, we get new symptoms.
Talk to it Butterfly, tell this new symptom its not real, its simply an annoying symptom that will wax and wane and disappear like every symptom does, don't give it power over you.