Hi, my cat has heart failure at an advanced stage. One of the problems is that she is having difficulty sleeping as the excess fluid in her body reduces her lung capacity as soon as she lies down. I noticed that she generally prefers to sit right up but then she can obviously not sleep. She is given a diuretic which I hope will help reduce some of the fluid in her belly/lungs; but in the meantime I am wondering what I could do to help her get some sleep. I have tried to put a pillow underneath her so that she can lie in a slightly tilted position with her head higher, but it doesn't really work. Any other tips or people with experience?