How to stop feeling all eyes on you?

For context, I've developed mild social anxiety presumably since I started going outside less. My anxiety isn't that bad to the point where I can't go outside anymore, but to describe it, it's like everyone's watching your every action and judging you for it. For example, I might standing in line at a coffee shop, and I suddenly feel like everyone behind me is staring at me. I start overanalyzing everything I'm doing—how I'm standing, the way I'm holding my phone, or how long it’s taking me to decide on my order. Even though, I know realistically no one is paying that much attention, it feels like every move I make is under a microscope, and it overwhelms me. How do I overcome this?