that's really great to hear. I think it shows how strong you are that you were able to realise that the site was causing anxiety and are taking steps to protect yourself from that 🙂 and 3 days sober is fantastic, you may have your ups and downs but we believe that you can do it.
When starting with a new psychologist, always remember that you have the power in that relationship, never be afraid to say after a couple or even just one session that you are not meshing with this person and would like to try someone else, the psychologist won't (or shouldnt) be offended; and if their approach isn't working just tell them, maybe they can try a different approach that would work for you better or recommend a different kind of therapy (there's not just one, CBT is the most common, but there is also DBT, psychodynamic, schema etc. - so if one doesn't work don't lose hope and many psychologists use a combination). And take it as slow or as fast as you feel comfortable with. I wish you all the best.