Try sleeping on your back or using a cervical pillow to support your neck's natural alignment. Avoid high pillows that tilt your head excessively. Gently stretch your neck with side tilts and rotations to improve flexibility. Apply a warm compress to relax the muscles.

Since the pain has persisted for 6 days and is consistent on one side, it’s better to consult a Physiotherapist for a thorough assessment

Use thin pillow

You may take consultation so i may explain you about the exercises And Ergonomic Advices can be given to you

Need Assessment and Follow Exercises , You will be perfectly fine

Check Your Sleep Setup Use a medium-firm pillow that keeps your neck aligned with your spine (not tilted). Avoid sleeping on your stomach — it forces your neck into rotation for hours. Side sleeping is okay if your pillow fills the gap between your shoulder and head. Gentle Mobility Exercises (do in pain-free range): Neck rotations (slowly turn head left and right) Chin tucks (gently draw chin backward, like making a double chin — strengthens deep neck flexors). Upper trapezius stretch (tilt head sideways, gently hold with hand for 15–20 seconds). Posture During the Day If you sit long hours (computer/phone), keep screen at eye level, shoulders relaxed, back supported. Take breaks every 30–40 minutes to move your neck. Heat Therapy Apply a warm compress or heating pad for 10–15 min if you wake up sore — helps relax tight muscles.

Occasional cracking with relief is usually harmless, but frequent self-cracking may create more instability over time. It’s better to address the stiffness with mobility + strengthening instead. If you ever develop tingling, numbness, weakness in arms, dizziness, or headaches, you should get it checked by a doctor or physiotherapist promptly. These could signal nerve involvement. Since the pain is persistent (even if mild), it’s worth having an in-person physio assessment to check your posture, muscle tightness, and joint mobility — so the treatment is tailored to you.

Take a consultation locally, your case needs a proper physical assessment

Try not to make extreme movements or twists to make cracking sound which you say is relieving 

Apply Volini twice a day.

Avoid sleeping on the stomach. Use a pillow that is firm and thin.

Neck strengthing and stretching exercises Hot water fermentation Avoid prolong forward bending. Maintain posture

Maybe Postural issue Do Rt side your dominant side that is the reason you may use long time mobile or laptop work.

To correct your regular posture including sleeping posture. neck stretching and strengthening exercises .