I know what you mean I use a citzbath over the toilet. You can get them online. When I was recently in hospital the nurse made me one with a wash bowl over the toilet. It did overflow a little as she overfilled it but a towel around the base of the toilet will cope with this spillage easily. Easier than squatting and I just read for 20 mins which I class as me time and I look forward to. The water keeps comfortably warm for that time. I actually use this during the day sometimes if I feel the need for a thorough clean up. A flannel is all you need to dry off the area. Easier than a bath soak.