New Starter - Help Please

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My 12 day old starter has bubbles. I have been feeding it 1-2x a day. It has never smelled terribly rotten and had never had any liquid accumulate like I have seen in videos. It does float. Smells a little sour but not overly sour. Do you think I am doing ok? 

Has the starter. Started to fall yet?

In the future take a paper towel and wipe the insides of the glass above the starter level. It will help evaluating the starter’s rise.