Try a propped version of the pose in which you place two blocks on their longer, narrow edges where your head and shoulder blades will rest.
From Staff Pose, slowly lower onto the blocks. (Make sure the block under your shoulder blades isn’t touching your ribs below your shoulder blades.) In this position, you can let your feet fall open, as if you were taking Savasana (Corpse Pose). From here, externally rotate your arms so your palms face up. Let your shoulders drape off the block. Having both blocks at the same height will reduce strain or overstretching of the neck. Relax your face, throat, and jaw.
See alsoYoga Shouldn’t Hurt: Prevent + Heal 3 Common Injuries