It’s up to you whether or not to consume berries but I found them to beneficial because of their anti-inflammatory properties and the amount of beneficial vitamins found within them.
You should go to stage 2 when you are basically symptom free which could take a long time.
We follow different stages on the forum:
stage 0: the optional cleanse
stage 1: the long term strict diet
stage 2: less strict diet with more molds, starches, sugars, etc.
stage 3: basically a healthy non-candida diet.