Hi Anita,
Two things come to mind immediately. I can’t tell you the third thing becasue I’m being watched:-) The two actions in Ustrasana (Camel) relative to the neck are to actively move the shoulder blades (not the shoulder joints) down the back body AND to draw the bones of the cervical spine in to the neck, away from the flesh of the back of the neck, and toward the front of your throat.
Now if these two things do not click with you I would strongly advise MODIFYING the pose. Many times poses are outlined in books or discussed in an "optimum pose’ sort of way that ius not “one size fits all”. Since I can not see your body I can not say what is best for your body.
Therefore you can work the pose without moving the head back too much, too agressively, or to the point of discomfort.
Additionally, in this pose, the sternum of the chest draws up toward the ceiling and this action creates a sort of synergy with the rest of your spine and MAY aid in your easy with looking up.
Hope this helps you find a deeper practice without finding a deeper practice.