Two positions that work for me: 1. On my side; the matching arm is completely supported by the bed, so only the opposite arm gets tired, at which point I switc

Two positions that work for me: 1. On my side; the matching arm is completely supported by the bed, so only the opposite arm gets tired, at which point I switch sides. 2. Book on floor, lie crosswise to bed on my stomach. Doesn't work if bed is too high, but if your arms are longer than the bed hight it's perfect.