Why is my sourdough starter not rising? She COLD #sourdoughforbeginners #sourdoughstarter #homestead

Feeling defeated... I am not giving up on this starter! It has been bubbly for 10 days since feeding started but it did not rise! After A LOT of research and YouTube videos, I popped her the oven with the LIGHT ON only and she rose (a little bit) after sitting in a warm water bath in the crockpot for the afternoon! It can't be this hard! A few other things... I did adjust the feedings. Originally I was feeding my starter bread flour + water. I switched to 1:2:2 75% ALL PURPOSE flour and 25% RYE flour according to weight (and adjusted my rubber band to meet new height of starter). We keep our house at an ambient 67F, a little chilly for starters according to my research. BE ADVISED you could accidentally cook your starter if you forget about it in the oven. Stay tuned for continued experimenting!