Hi, I don’t think oat bran will work. It will absorb too much liquid. I haven’t had any problems with millet while healing candida (which I have since cured). My oriental medicine book says its highly alkaline and good for healing candida. It actually states it as one of the only “grains” to consume while healing candida ( I ate millet congees during the detox phase and it worked wonders- I have a recipe for it on this forum too). I do however always soak it to germinate it before eating. But if you don’t feel comfortable with it then any gluten free flour should be a good replacement. The best thing to do is to try a replacement and then once the bread is all put together you can judge whether or not it needs more liquid. I also wouldn’t sub with more coconut flour since that too is very absorbent.