How much sleep do you get on a regular basis? Sleep I find is critical in maintaining my symptoms. If I get so much as just 7 hours (just 1 hour under recommended amount!) after a couple of days I can start seeing those same symptoms you’re talking about show up. At 4 or less hours or irregular sleep in general it can rage out of control.
If your sleep is poor that can be a place to start. With your symptoms at this point they may prevent you from sleeping so you will likely need some sort of aid in the beginning. That can be a quick way to start at least reducing symptom severity. If you choose to start an antipsychotic which will likely be recommended by your doctor it may take longer to kick in. Some APs can function as sleep aids as well, such as seroquel, so that’s something to keep in mind as well.
I had childhood onset psychosis and depression, (literally my first memories at age 3 were of hallucinating) and I was not able to seek professional help until I was in college because of my parents fear and disliking of the mental health system. Due to this I was also very paranoid of it and like you tended to lie and hide things I experienced. It only hindered me finding true help for myself. The more honest you are, not just with professionals but with yourself, the better things get because you cannot begin to solve a problem if you refuse to acknowledge it’s there to begin with. It is 100% possible to become stable and live a (more or less) normal life. Many members on here have achieved that. I am also at a point of great stability in my life and have not been this high functioning in years. I’m not even on an antipsychotic anymore! You’re on the right path, stay strong.