Take a full week with this pillow. It takes time to adapt to alignment. There will be a difference on the first night. You should be seeing an improvement by the third night. On the seventh night, you may better understand how this pillow supports alignment. It may take several days for your body to adjust to a new pillow. Results can vary depending on individual needs and preferences. https://github.com/prince2334/best-pillow-for-side-sleepers/discussions/1