A pinky is not big enough!

You should be feeding 10 - 15% of the snakes body weight each week. You need to certainly be moving up to bigger mice. My little guys are already eating rat pups and they aren't much older than yours.

You will also need a digital scale to weigh your BP. Walmart has them from $15 - $20. Make sure it can read grams. You can get that when you pick up the Acu-Rite thermometer/hygrometer. It's only $12.99 there.

Good luck!