Hello. I find too that the more I sleep, the better I am. I think for me, I feel like I can hide in bed from my anxiety. I'm relaxed, well rested, and if I stay in bed and sleep, then I can't have the feelings. It's like I sleep them away. I slept off and on ALL weekend, much more then normal. Friday was a horrible day for me, and the extra sleep is what I needed to kick myself into shape. That and, my anxiety is exhausting. When I have had a bad day, I need much more sleep or it takes me a lot longer to get over it.
For me, I think it's just being well rested helps me to deal better with my symptoms...and it takes up more time out of my day when I'm symptom free!