Go fiddle with the calculator on the website I linked to see how injecgion time changes peak-trough gap in the hormone curves. But generally I want stable levels because research shows we need a minimum amount of estrogen in order to have feminizing effects. We don’t want to overshoot it because your body will create SHBG at too high of levels. I’ve never seen any research that hints at varying levels be more effective.
NK Jemison is a great new scifi author who always includes a trans character in her stories in really natural ways. Not sure they’ll be what you’re looking for, but they’re also incredibly good books.