How much should a parrotlet eat daily?

I feel like my parrotlet either eats like a truck or barely touches their food depending on the day. What's a normal amount? I free-feed pellets and offer fresh food twice a day. Am I doing this right?

I've tried a bunch of brands and Goldenfeast is hands down the best value. My Paco devours it.

This made my day honestly. parrotlet owners are the best people. We're all just trying our best for our feathered kids.