I was on both Ativan and Zoloft, when I fist started taking cannabis. I have since stopped needing the Zoloft and very rarely need an Ativan. It took 2 years before I was able to manage my anxiety and depression on cannabis alone, but I am so happy to be free of the damaging prescriptions.
I suggest you find a Dr that will work with you to find a good balance for you. It will also be important to pay careful attention to the strains that make you feel "right" and paying attention to any side effects or feelings you don’t like.
Sites like HelloMD, Leafly, and Healer.com have great information and education to help you along.