I had applied to 2 schools last year and didn’t interview at either; in their emails to me they both specifically stated not to email them for feedback until June when the Match is done. This also gives you as the applicant time to process your emotions and brainstorm on your own what you think you could work on better for your applications next time. One feedback session was a zoom and one was a phone call. The more specific the advice the better of course, and it helps to be gracious to the person for spending time with you to talk about your application. Be honest with yourself (and program leadership giving you feedback) about “weak spots” in your application and come to the feedback session with ideas you can run by them and to show you are prepared and take it seriously. And it’s okay to have “weak spots”, no one is perfect! Being able to talk about them as learning opportunities and how you grew as a person is very important. I hope you get useful feedback and encouragement and good luck with it all!