As strange as this sounds, your low libido and flat feelings are actually very encouraging. Your brain is changing big time, which means you are doing the right things. The brain is a thing, but we see our arms and legs and body being hurt and we recognise when we pull a calf muscle that it will heal. We’re not surprised that it takes a while to heal, but we know it will. We have no experience with our brain being damaged and what we have to to heal it. The recovery of the brain means fucked up messages going (or not going) to the rest of your body (including your dick of course) and you get to experience the healing through all the weird shit rather than noticing your improving calf or a scab growing on a cut. So you should rejoice however uncomfortable it is and however worried you may be.
Don’t stop healing i.e. Don’t watch porn and (ideally) don’t masturbate. You are a hero. Enjoy this frustrating and liberating ride.