Anxiety and Brain fog?

I’ve been having constant brain fog for the past 6-8 months, extremely debilitating and make me feel extraordinarily dumb to the point I am forgetting what it means to be myself. My psych prescribed some sos benzodiazepines, I was a bit skeptical at first cause I’ve been diagnosed with ADHD previously but stimulants never managed to break through my brain fog and we’re also in the process of figuring out the extent of my depression. Taking the anxiety meds made me feel calmer than I’ve ever felt, for a solid 30 mins my brain fog disappeared to a considerable degree and I could think and plan ahead. The experience left me very puzzled and confused as to what should I even tell my psych again and does it have any implications for my coming diagnosis?