@Morgan_1995 That does sound super draining. I will say, the goal is to allow the possibility that it is psychosis to exist and not try to keep reminding yourself it’s just anxiety. Trying to argue it’s not psychosis will feed more into your OCD. Though, that can be a little extreme for someone to jump right into, since the anxiety that comes from that thought gets worse before it gets better.
Performing certain compulsions (like trying to convince yourself you don’t have psychosis) has created this sense of temporary safety around a fear, but reinforces it. These thoughts have the same  physiological response as if you were in the room with a massive threat, like a bear. When you perform a compulsion, it teaches your body that you avoided a massive threat (hence the symptoms of intense anxiety even though you rationally know you’re okay). What Exposure and Response Prevention Therapy (ERP) does is retrains your nervous system to not view these thoughts as threats. Though, because your body is used to treating these thoughts as a massive threat to your wellbeing, when you refrain from partaking in the compulsion, your body will still react as if there’s a bear in the room.
Personally, I experienced a long period of intense panic from starting ERP. The morning after my first attempt, I felt really really horrible. It was some intense panic, and I did end up asking for some reassurance. Though, I kept practicing, and I ended up noticing when allowing a threat to be there, the panic would well up and then suddenly subside. Slowly, my anxiety levels lowered, and I gained the ability to truly view a thought without judgement. I don’t know what I would do without ERP.
I will say, I jumped in headfirst without a therapist, which I don’t recommend. Usually, ERP is gradually worked up to. People will make a pyramid of low level anxieties all the way to the top with their worst obsessions. They will start challenging things that cause less anxiety and work their way up, which is more realistic. There are also many other treatments for OCD I recommend you could look into. I just wanted to tell you I’ve been there, what helped me without sugar coating it, and give you some info I learned that helped me down the path of (at least partial) recovery. Harm OCD is tough, I’ve struggled with it a bit and it’s one of my friends main themes. She’s one of the kindest, gentlest people I know, and it makes me sad hearing the thoughts and images she has to deal with. I’ve also heard that a LOOOOT of people struggle with psychosis/schizophrenic themes in OCD, and luckily I stayed away from the DSM for that or my OCD would have a field day. It’s hard, and you’re very strong for dealing with this, it just sucks.
One last thing, I noticed the hardest compulsions to stop were the ones that occurred mentally, like arguing with my OCD about what was really going on/morally right or checking if I was experiencing symptoms of stuff. That’s also common, so don’t feel discouraged if it’s tough. From an ERP lens, you could respond with “I don’t know” or the very intense “I agree and I don’t think I’m going to do anything about it”. There was a ted talk about “starving the OCD monster” that I remember explaining it well, as well as the OCD and Anxiety channel on YouTube run by a
guy named Nate who explains these concepts well. Though, careful about reassurance seeking. Memes always helped too