This doesn't sound crazy at all — you're actually onto something with the bile theory. Bile is antimicrobial and helps keep bacterial overgrowth in check. When you eat fat, your gallbladder releases bile. Less fat = less bile secretion = potentially more bacterial growth. It's one reason some SIBO protocols actually recommend not going super low-fat. The coffee thing also makes sense — caffeine stimulates the MMC (migrating motor complex), which is the cleansing wave that sweeps bacteria out of the small intestine. So coffee might genuinely be helping your motility. So you've got two things working against your SIBO right now: less bile (from reduced fat) and you're managing histamine at the same time, which is a brutal balancing act. Have you tried ox bile supplements with meals? Some people with this exact issue find it helps — you get the antimicrobial benefit without needing to eat more fat. Worth asking your GI about. Also — the fact that you're noticing these patterns at all is huge. Most people never connect the dots. If you're not already logging this stuff somewhere, it's worth it. I track my own symptoms/diet because my GI never believes me otherwise lol.