Don’t do the psyllium husk; there are much more effective treatments.
Only do the diet; the “cleanse” part is not advised (where you eat very little foods).
As far as withdrawal symptoms; your body will want sugar, salt, bad foods, etc because the candida wants it to feed/grow. You will have to deal with this for a few weeks and then it goes away.
Things you need for the diet:
Consult a naturopathic doctor for best results and a good strong plan. It can take as long as 6-18 months to fully recover from candida.