Hi Gustavo, I would still feed once a day until you begin to see rising, which is your queue to begin twice a day feedings. Once your starter is rising, if your home is very warm (greater than 72°F), you might consider feeding your starter with a reduced portion of starter (relative to the water/flour amount), which can help you line up your twice a day feedings closer to the peak rise. This helps to keep the yeast more vigorous. For your starter amounts, you could try a 1:4:4 feeding (starter:water:flour, by weight), which would look like this: 10g starter + 40g water + 40g flour. 

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