Are you sitting comfortably..? Problems with your head falling forwards
If you can get your bottom to the back of a chair, a small, rolled-up hand towel could help to support your lower back and help you sit up straighter. Place the towel just below your waist. Be careful not to place it too high or too low as this could push you too far forwards in the chair which could be unsafe.
If this does not work, talk to your wheelchair specialist about more support for your head or you may need a tilt-in-space wheelchair.
Bad posture
Curved back leading to rounded shoulders and difficulty holding head up to look forwards.
Good posture
Small towel in lower back brings shoulders back and head in a more upright position.