I've had my ZZ plant for about eight months now and honestly I'm amazed how little it needs

I've had my ZZ plant for about eight months now and honestly I'm amazed how little it needs. I water maybe once every three weeks and it's just thriving in a corner of my living room with indirect light. The glossy leaves look almost fake they're so perfect. My only question is—does anyone else worry they're underwatering theirs? I keep second-guessing myself because it seems too easy, but I guess that's the whole point with these guys.