Agree with all of the above, but to add another point OP is only a PGY-2 and likely hasn't even started their outpatient year. OP, how do you know you even want outpatient? I know plenty of people that thought they'd love outpatient who ended up hating it (and the opposite). On top of that, outpatient at academic programs is often very different from outpatient PP, unless you've done a few rotations in clinics similar to what you're talking about why do you think you want cash only PP + therapy? I agree with others that going straight into that out of residency can be difficult and often takes time to build up that type of practice. If you become confident that this is what you want, it would probably be best to start building that practice during your PGY-4 year if possible.
In terms of addressing the anxiety, it's important to understand that many fresh graduates do not start out in their ideal role and end up transitioning into something else at some point. This idea that once you're an attending everything magically falls into place is a myth. Yes, there's many positives about attendinghood (stability/need for us, increased pay, ability to bargain and negotiate contracts, etc) but reframing our thoughts from "I'm going to do something I love and don't need to struggle anymore" to "Now I have the tools, credentials, and autonomy to grow and build the career that I want" is important. Yes, things get easier at some point, but the biggest learning curve in our field is probably the first year of practice as an attending. Understanding this and that it will take time to adapt (and that this is normal!!!) will hopefully help normalize some of those anxieties. If it's more just about your anxiety with lack of control or managing uncertainties then I agree with Ironspy that seeking therapy for yourself is probably wise.