This will certainly help as a temporary measure. That doen not mean that a blender will not work but that if the blended juice does not do the job it is not because the idea is flawed. OR if you are willing to clean the juicer after your root is juiced. Approaching them at closing time is a great time because you can then clean their blender for them for the day at the same time. Not a must but frequently helpful.
Total elimination is required for a while to prevent withdrawal from continuing.
You have to use naturally caffeine free stuff. Hope this helps.