Reading in Bed

 Keep this basic rule in mind while reading in bed; keep your neck in a neutral position whenever possible, do not bend or lean your neck forward for long periods. Reading in bed, with several pillows propped behind you can cause neck strain, with your neck pushing forward and holding your arms out to support your book or tablet. To ease strain on your neck while reading in bed, consider purchasing a wedge shaped pillow to prop up your book and support your arms, helping to keep your spine in a neutral position. Finally, try not to stay in one position for too long!

https://www.spinemd.com/pain-in-the-neck-tips-to-alleviate-symptoms/