Too many books, too little time

I have three readers I use regularly. My bed reader, my balcony reader and my out and about reader.
Currently they all have a different book open. I was the same with paper books, having my bedtime book, my balcony book, my backpack books for reading while out an about. With paper books I could be reading 10 concurrently. Obviously I need more ereaders
I have a poor memory for many things, but for books I can pretty well pick off where I left off even after a year or so. Probably because I am used to it.
Helen