So I followed the KAF guide in starting my sourdough starter. Everything was going well but after a week I noticed that it wasn’t yet as bubbly as it should be and it wasn’t rising at all after feedings. I tried doing 2oz water and 2oz wheat flour, but it didn’t seem to have an effect. Then, I figured my house was far too cold (it gets down to 60 at night), so I put it in the oven with the light on. Now my starter is bubbly and it rises after being fed, but it’s lost it’s sour aroma. It just smells like yeast now. What can I do to troubleshoot this?

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