I'm not following these rules because it's simply unhygienic and dirty. It was the first thing I negotiate with my mum. I must wash or at least be allowed to do a sponge bath and wash my privates (you'll be bleeding heavily in the first few days). The hair, I can tahan for three to four days but mandi, you must allow me to bath.
She mentioned that it's wrong to not bath. You can bath during confinement but cannot use cold water - must be warm-hot water and with herbs like ginger, lemongrass and dont know what else. If sponge bath, can but quickly wipe and get dressed. Hair can wash but same - wash with warm-hot water and blow dry. Cannot air dry.
You can find out more in the confinement subforum - I believe the ladies talk about other confinement practices and such.