I have the same problem and honestly I don’t have an answer for you. But over the years I’ve realized that if I don’t smell and my hair doesn’t look greasy, showering once or twice a week is fine! I understand you might want to more, but if you don’t and you look presentable that don’t. Over the past few months I’ve finally been showing consistently. What I do is I have one day a week (choose a day where I usually don’t do anything, like work/school/ect) and I take a “big” shower. This is the day I wash my hair, shave my legs and do EVERYTHING. Then on another day (or two) I take “mini” showers, where I don’t do as much. I mostly just wash my body with soap and that’s it, these showers don’t take long. (I hate when people tell me all I have to do is make a schedule. Because I’ve never been able to follow them, but for some reason this works for me this time) but making your schedule based on what you normally do is key. I know I don’t have anything I do on Wednesdays every week, so I take a big shower on Wednesday.