Hi Michael, I'm a little confused by "removing back to original weight," but I assume you were keeping about 70-75g of starter each time? This sounds like a reasonable approach, although once the starter begins to rise consistently (twice), I would recommend switching to twice a day feedings, which will help to keep the yeast more active. 90F does seem a little too warm, although it shouldn't have killed your starter. However, it is concerning that you're not seeing any bubbling at this point. You might want to return to the initial once a day feedings and the ratio of ingredients you started with, and then shift to twice a day feedings once the starter begins rising again. I would aim for environmental temperature in the low to mid'70's, so perhaps you can find a spot in your kitchen that's just a little warmer? In order to see the type of doubling we refer to, it's helpful to have your starter in a clear container that is taller than it is wide, with straight sides. It's harder to see this type of rising if you have your starter in a wide bowl or Tupperware container. I hope this helps! Let us know how it goes.

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