Making 5 ounces

Kenzie

My formula I have its 1 scoop for every 2 ounces of water. My son was drinking 4 ounces but now drinking 5 ounces. So I'm wondering how I go about making a 5 ounce bottle instead of 6 ounces and wasting the left over once. Can I do 2 scoops and a half?