Update: Day 5
It's growing some wierd stuff on the top, so I'm somewhat obsessively googling if it's mold or SCOBY....
Update: day 6:
It was not mold. It was just the SCOBY. Mold is on the surface, and is dry. This was not.
Update day 11:
I got busy and lazy so I just made my second batch today. The first batch was good! It only made like 1/2 cup (measuring cup) bc I wanted to be sure I left 4 cups for my next batch, and I only did half of the recipe from the SCOBY I bought.