Hi, Kaitlin! On Day 5, it's normal to see no significant activity yet, or even a decrease in activity for a few days. Your starter is also quite small to be eating that much flour at once. Generally, you'll want the starter:flour:water ratio to be 1:1:1. Keeping the same jar is also the easiest. If you know how much it weighs, you can write this down on your jar somewhere so that it's easy to find the weight of your starter inside. Happy baking!

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