Anxiety issue. In a proper way.

I recently visited a psychiatrist (in August) and started eating some medicines based on my evaluation. But I could not visit my psychiatrist again because I had to shift to a different city. Now, I am really confused about my dosage of the medicines. I was prescribed to take Tab Pari CR(25mg) and Tab Nexito. When I moved to the different city I could not get nexito but continued with Pari CR(25mg) dose. Then I reduced the dose to 12.5mg and took that for a month. Now, I have reduced the dose to 6.25mg. But lately I have been facing some problems confusion, dizziness and some other problems related to my head which I cannot explain (side effects perhaps). This means that I was not supposed to reduce the dose in that manner or I was supposed to do it with certain other medications. So, I would really like someone to help me out with a correct dose by which I can eventually stop taking the medicines in a proper way.