I realized that I've been pretty close to 18/6 for the last few years, but being very loose w/evening snacking. So it wasn't a big shift. So even if I loosen up the rigor, I don't think my eating habits would dramatically shift.

I didn't like my 20/4 experiment. But I've been noticing that I'm not super hungry for my second meal, so thinking of replacing it with just an easy keto-friendly snack (cheese, almonds, etc). Would be kind of nice to have ~45min of my evening back by not spending time cooking and eating.