I think things that give a temporary relief are things that modify the androgen receptors and immune function. Your carnivore diet did not effect your gut microbiome in the first few days. The no carbs put your body into ketosis which decreases T and makes receptors more sensitive.
But you can go ahead and do things that “mess” with your gut microbiome. People have been proposing this for years. There are posts from 2008 that claim Minoxidil-induced PFS was “proof” that it was a gut microbiome issue because “Minoxidil does not effect androgens.” Now studies show that Minoxidil actually destroys the androgen receptor and 5a-R2 transcriptional activity just like Finasteride does. (Albeit despite not reducing DHT levels - this has nothing to do with DHT directly)