Sleeping on your side. Knees bent slightly with one pillow between your knees.
Pull your pillow down into the shoulder to support your neck.
Make sure you have one thick or two thin pillows that fill the gap between the bed and your neck while keeping your neck straight.  Too many or too few pillows will mean your neck is bent causing compression of the joints on one side and over stretching on the opposite side.
To see how we can help you, please contact us.