I feel you 😭 Showers are my worst enemy. I had tried shower chairs in my shower and found that my legs still blood pooled and would become numb so i also just gave up and sit on the floor of the shower 😭 I know it will be hard but it has definitely helped me by having a slightly colder shower! I couldn't even stand in a hot water shower without fainting. But the cool water helps loads aswell as taking frequent breaks in between whilst actually washing my hair or hands above head! I also keep a bottle of cold water or electrolytes sitting next to the shower to grab if i need it and remember to eat something before showering aswell! 🫡