What should i do to prevent tailbone pain from my wheelchair?

Pressure relief: Recommend relieving pressure to the sacral area. This can be done in a wheelchair with a tilt in space feature. Manually lifting off the tailbone while in the chair. Being fitted with a special cushion (typically filled with air) to reduce pressure. Lastly, having the area visualized daily by a caregiver to evaluate for breakdown of the skin.

Obtain a proper: Seat cushion after going through pressure mapping at a rehab facility near you. See an occupational therapist specializing in spinal cord injury. They're experts at this.