Think about this: almost every home cook has goofed this up at least once. My grandma once put a full cup of salt instead of a half cup because she was distracted by a phone call. We laughed about it for years. Mistakes are part of the story.
But you? You are going to nail it. You now know that half of ½ cup is a quarter cup. You can eyeball it, measure it, or use a spoon. You are ready for pancakes, cookies, sauces, and life. Go make something delicious. You’ve got this.